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Bioshock Infinite: Timeline

SPOILERS WARNING: Not Advised To Look At Unless Finished Game
by

Cal Vin

on 16 November 2014

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Transcript of Bioshock Infinite: Timeline

Bioshock Infinite:
Timeline

December 29, 1890
At the age of sixteen, he was part of the 7th Cavalry Regiment of the United States Army, and was present at the Battle of Wounded Knee. However, in front of his comrades, his Sergeant said that DeWitt was part Native American. Upset over being stigmatized, DeWitt viciously slaughters the Native American combatants, in an overzealous attempt to earn the respect of his comrades and distance himself from his ancestry. Due to his gruesome actions at the battle, other members of his regiment, including Cornelius Slate, gave him the nickname "The White Injun," because of his habit of taking trophies from his victims. Although he was seen as a hero to his U.S. Army men, Booker felt shame and regret for his unforgiveable actions.
April 19, 1874
Booker Dewitt is Born
1891-1892
Decline
Booker refuses his baptism at the last minute thinking that his sins could not be washed away by a "dunk in the river"and immerses himself in alcoholism and gambling instead.

Accept
Booker accepts baptism and is born again, taking on the name of Zachary Hale Comstock. After the baptism, Comstock became a deeply religious man, and he used his newfound faith to reshape his identity. He soon became a powerful man with a strong pull in the United States government.
1892
Booker's daughter, Anna DeWitt, is born. Her mother dies in childbirth. Dealing with the scars of Wounded Knee, the grief of her death, and the stress of becoming a single father, Booker began to drink and gamble. He later became a Pinkerton Agent, tasked with breaking up union strike efforts, but was discharged due to his use of extreme methods on the job. Following his discharge from the Pinkerton Agency, he became a private investigator, but his alcoholism and gambling addiction intensified.
Comstock successfully convinces the U.S. Congress to provide funding for the construction of a city he intends to make a modern-day ark. Comstock oversaw the construction of the city, which he named Columbia. It was launched in 1893 with much fanfare, and Comstock became its leader, creating a political party of all whites called The Founders.
1893
Rosalind Lutece
A physicist who had worked many years with the curiosity of multiple realities. In the course of experimentation with atoms, she was able to indefinitely suspend an atom in midair--her colleagues referred to the process as "quantum levitation," while Rosalind herself dubbed it the "Lutece Field." She began to wonder about the possibility of suspending larger objects, up to and including a city.
May 1 - October 30:
The fair gives rise to the concept of American exceptionalism. The star attraction of the exposition is the floating city of Columbia, an ambitious project envisioned by the self-proclaimed prophet Zachary Hale Comstock, designed by Rosalind and Robert Lutece, and funded by the U.S. government.
The 1893 Chicago Worlds Fair occurs.
October 15th, 1893
Rosalind successfully opened a Tear for the first time, bringing Robert through it into her universe. The two then created a contraption that allowed them to enter other realities via the Tears.
Continued experimentation with the Lutece Field led to Rosalind's first interaction with Robert Lutece, a male version of herself from an alternate reality who was performing the same exact experiment. By manipulating a pair of quantumly entangled atoms, the two were able to communicate across space-time barriers through Morse code. When she reported this information to Comstock, he instructed her to find a way of accessing such alternate realities, which he believed would act as windows into prophecy.
Rosalind met Zachary Hale Comstock, then a prominent U.S. politician who took great interest in her work. Comstock agreed to fund continued research into the Lutece Field in return for her help constructing a floating city he had seen in a premonition.
Too Much Use
Comstock used the device extensively to see other realities and predict future happenings. Due to Comstock's use of the tears, the people of Columbia saw him as a true prophet, and began to worship him. He also provided access to the Fink brothers. However, the device had an adverse affect on Comstock, aging him rapidly and rendering him sterile.
August 12, 1894
Jeremiah was a business man with a manufacturing monopoly within Columbia. He first learned of Tears because of his brother Albert. He questioned them until Albert made a fortune off of them. He then looked through Tears to advance and expand his company's inventions.
Rosalind meets Comstock
Accessing Alternates
Albert's Melodies
Once Albert gained access to Tears, he would open them in his studio to hear the songs from the future and then he added period-appropriate harmonizations and stylizations to the existing melodies. He became one of the most celebrated composers of Columbia. He began to run the Magical Melodies studio in Emporia and managed to achieve great success via the release of several extremely successful songs.
Jeremiah's Inventions
Comstock looked through Tears and saw that Columbia would only prosper as long as his bloodline sat the throne. However, he had become sterile and desperate to have a blood successor. Comstock approached Rosalind and Robert for a solution. The three deduced that a true heir could be procured from another universe. The Luteces then sought out Comstock's former self, Booker DeWitt, from the alternate universe Robert was originally from.
An Heir to the Prophecy
The Plan Of Colombia
Lady A. Comstock
Before Columbia, she selfishly took advantage of the numerous suitors who admired her. Comstock offered her redemption for her sins and his hand in marriage. She took on the elevated position of First Lady of Columbia and spread Comstock's teachings to its citizenry, who deeply respected her. Her audio logs affirm Lady Comstock's deep admiration and love for Zachary Comstock for forgiving her sins and giving her another chance. However, she began to question her faith in her husband after seeing how cruel and unforgiving he could be to those who opposed him.
October 8, 1893
Robert Lutece shows up at Booker DeWitt's door with an offer he cannot refuse from Father Comstock. He convinced him that they would wipe away his extensive gambling debts in exchange for his infant daughter, Anna. Booker is faced with no other choice and hands over Anna.
Regret
After Booker reluctantly handed her over, he regretted his choice immediately, and pursued Comstock's agent. Booker found Robert Lutece with Comstock and Anna in an alleyway, near a strange portal with a Rosalind Lutece inside. Booker grabbed Comstock as the latter stepped through the portal, and tried to wrestle Anna from his grasp as Comstock ordered the portal shut. Comstock was able to shake Booker off, and the portal closed just as Anna reached out to Booker, severing her pinkie finger in the process. Overcome with regret, Booker fell even further into alcoholism and his gambling habits worsened. Though he closed the door in his rotting apartment to Anna's room, he eventually branded his hand with Anna's initials, "AD," so he'd never be able to forget his failure. Booker then spent nearly twenty years living in grief and despair.
Comstock began to see America as "the New Eden," and the Founding Fathers as prophets of God's Great Plan. However, he also saw Caucasians as the only truly free race, and viewed minority races with contempt. He declared Abraham Lincoln "the Great Apostate" who brought nothing but war and death upon the country. He also saw Columbia as the key to usher the world into righteousness and became determined to make it a reality.

Shortly afterwards, Comstock would marry one of his devotees, Lady Comstock.
The New Eden
Presentation
1901
Seen as a floating symbol of American ideals at a time when the United States was becoming a world power, Columbia was sent to all corners of the globe on a goodwill tour. However, during the Boxer Rebellion in China, Comstock discovered that the Boxers were holding American citizens hostage and ordered Columbia to open fire on the Chinese populace in Peking. This act revealed to the world that Columbia was, in fact, a giant warship.
Comstock saw Anna as the key to making his dream of remaking the world a reality. However, the child was rejected by Lady Comstock, who believed her to be Rosalind and Comstock's bastard child. At Lady Comstock's insistence that the child not live under their roof, Comstock started to create Monument Island to house her. Renaming her Elizabeth, Comstock began to call her the "Lamb of Columbia," and the Founders soon worshiped her as a savior.

Over time, overuse of the Luteces' contraption continued to deteriorate Comstock's body, giving him cancer, and causing him to have the appearance of an old man at thirty-eight. In addition, it gave him knowledge that Booker would eventually find a way to take Elizabeth from him. He began to warn the populace that a "False Shepherd" would appear, and began constructing a plan to make Elizabeth servile to him.
The Lamb of Columbia
Assassinations,
Rebellions, and Murders
Lady Comstock
Lady Comstock was grew frustrated and angry with keeping the truth about Elizabeth from the populace. Knowing that she was going to reveal the truth, Comstock had her killed and framed her servant, Daisy Fitzroy, for her murder. This act set in motion the chain of events that would lead to Fitzroy creating the revolutionary group known as the Vox Populi.

The populace was devastated by the news of her assassination and sought to glorify her memory. Like a Catholic saint, her body was preserved in a memorial shrine while her belongings, such as her trademark blue dress, were treated like holy relics. Comstock, meanwhile, used this frame-up to galvanize his persecution of the Vox Populi.
The Luteces
Comstock soon discovered what the Luteces were doing, and ordered Jeremiah Fink to sabotage their contraption, killing the two as they were using it. As a reward, ownership of the Luteces' patents was turned over to him following their elimination. In actuality, the sabotage caused the Luteces to exist across all space and time, giving them the ability to appear wherever and whenever they wanted. While Rosalind was satisfied with this state, as she would be able to remain with her brother indefinitely, Robert was dissatisfied with the unresolved matter of Elizabeth's fate. Still determined to stop Comstock, they devised a plan to send Booker to Columbia to retrieve his long lost daughter.
1895
As Elizabeth grew older, it was discovered that she had the power to open Tears; Rosalind hypothesized this was due to her finger remaining in her home universe, as it was cut off when the Tear they brought her through closed too soon. Robert and Rosalind then discovered that, through the use of her powers, Elizabeth would fulfill Comstock's prophecy, leading to the destruction of New York City in 1983. Robert, wishing to undo their mistake, issued Rosalind an ultimatum: join him in sending Elizabeth back to her original universe, or he would part ways with her. Unwilling to separate from her "brother," Rosalind agreed to assist him, though she was not optimistic about their chances for success.
October 31st, 1909
Elizabeth's Powers
July 6, 1902
The United States government disavowed Columbia, and ordered Comstock to stand down. Seeing this as a betrayal, Comstock led Columbia to secede from the union, and the city disappeared into the skies. Comstock thereafter declared Columbia the true America, believing the United States to be a shell of its former self and condemning it along with the rest of the world.
Secession
July 23, 1902
A strike occurs among the city's factories and paralyzes part of the production, but then turns into a brutal brawl between the workers and the police, leading to several round-up of insurgents, and death among the policemen. Vox Populi legal expert John Goldman calls for peaceful resolutions to avoid further violence.
February 13, 1903
Daisy Fitzroy reveals herself as the leader of the Vox Populi.
1904
Comstock saw to the creation of the Siphons as her tear-making powers began to develop, in order to keep them in check. The Siphon is installed at Monument Island and begins to limit and harness Elizabeth's powers.

Around this time, Comstock hires Fink Industries to create a guardian for Elizabeth. Jeremiah looks through a Tear and sees a design sheet for a Big Daddy. He calls it a "wonder" and creates a part man-part machine hybrid that becomes known as the Songbird. It was Elizabeth's only company, bringing her such things as books and food. Although it held her captive, the creature was her caretaker and protector. As a child, Elizabeth viewed Songbird as a friend, but later came to hate it for keeping her imprisoned.
1912
Bringing Booker
The twins open a Tear 20 years after the loss of Anna in Booker's apartment in New York to offer Booker to reclaim his daughter. Booker accepts and he goes through the Tear leading him into Comstock's reality.

As a result of crossing over, Booker becomes disoriented and confused and begins to recreate memories from his old ones. He subsequently believes he is going to Columbia to retrieve Elizabeth as part of a job, and forgets the loss of his daughter. Afterwards, the twins take Booker, now with no memories of Anna except the name itself, to a lighthouse, and provide him with a box holding information and supplies related to his "job" to clear his "debts."
Booker enters the lighthouse, and later, a shuttle atop it. He enters the code given to him and boards the shuttle, only to drop his pistol and be launched into the sky, ascending into the city of Columbia.

Upon entering Columbia, Booker is automatically exposed to the religious movement of Columbia and its leader, Zachary Hale Comstock, who is worshipped and seen as a prophet of God. Booker, in order to gain access into Columbia, must be baptized; however, the preacher nearly drowns Booker, sending him into a state of unconsciousness in the process.
Entering Columbia
When Booker reaches Monument Island, he finally meets Elizabeth, who is unaware that she has been observed as a "specimen" for all her life. Booker discovers that Elizabeth has an ability to open portals through dimensional space and time when he sees her turn a picture of the Eiffel Tower into a portal to an actual street in Paris in the year 1983. Booker eventually enters the library and Elizabeth is initially frightened, and throws books at the stranger, but she becomes relieved when she asks Booker if he is real, and he replies that he's "real enough." Using the key given to Booker by the Luteces, he and Elizabeth barely escape from Monument Island, and from her guardian—the 30-ft winged creature known as the Songbird. Booker and Elizabeth then crash-land onto Battleship Bay, rendering Booker unconscious.
Meeting Elizabeth
Before acquiring the Vigor in the Hall of Heroes needed to activate the lift to Lady Comstock's Aerodrome, Booker and Elizabeth discover more about Comstock and the creation of Columbia.

Despite Booker being present at the Battle of Wounded Knee and having no recollection of such, Comstock was also apparently present and was a hero of the battle. Later on in life, he claimed to have seen the archangel Columbia, who showed him a vision of the future, a future with a floating city in the sky. This experience made him see himself as a Prophet of God. After the floating City of Colombia's completion in 1900, Columbia traveled across the world until 1901, when it fired on Peking, China during the Boxer Rebellion and Congress subsequently demanded that Columbia return to mainland America. Comstock, feeling betrayed and believing that America's ideals were fading, led Columbia in its secession from the United States, and, afterwards, it vanished into the clouds.
Getting to the Airship
Fink
In the new reality, the Vox have rebelled against Jeremiah Fink, and the Booker in this reality was a hero who died for the Vox cause. Fitzroy, encountering Booker, proclaims him "either an imposter or a ghost" and orders her troops to attack him because she wants him to remain a martyr. She then kills Fink and threatens to kill a little boy, claiming that doing so is the only way to eliminate the Founders. But, before she can kill the boy, Elizabeth sneaks up behind Fitzroy and stabs her in the back, leading to her death.
Slate
In the Hall of Heroes, Booker encounters a fellow soldier from Wounded Knee, Cornelius Slate, who is fighting with the Vox Populi against Comstock. Slate reveals that Booker's instincts are correct—Comstock was never there, nor was he on the battlefield during the Boxer Rebellion. Booker and Elizabeth also discover that she is Comstock's daughter, which is why Comstock is relentless in his pursuit of her—He wants his heir to "sit the throne, and drown in flame the mountains of man." After fighting Slate and his men—and either killing or sparing Slate—Booker acquires Shock Jockey and escorts Elizabeth to the First Lady's Aerodome. As Booker sets the zeppelin's course, Elizabeth discovers that he had lied to her—the coordinates he put in were taking them to New York, not Paris—Angered, she hits Booker with a wrench and knocks him out. She eventually leaves the zeppelin, which is hijacked by Vox Populi.
Fitzroy
Regaining consciousness, Booker meets Daisy Fitzroy and they make a deal—Booker will go to the gunsmith Chen Lin and get weapons for the Vox and, in exchange, Fitzroy will return the zeppelin. Booker is dropped into Finkton, where he meets up with Elizabeth. She agrees to join him only so that she can reach Paris. The two continue into the industrial zones and the shanty-towns of the poor. They eventually find Chen Lin—tortured to death.

Suddenly, the Lutece twins appear before them and reveal that Lin, like Schrödinger's Cat, is both alive and dead in other worlds. Elizabeth opens a tear in which Lin did not die. However, now everyone that died in the reality they just left (including Lin) remembers being dead, and Lin believes that his machines are there when they aren't. Lin has also had his tools seized by the police in this alternate Columbia, and when Booker and Elizabeth find them, they are forced to open another tear in which the weapons are in the possession of the Vox.
Elizabeth, remorseful and covered in blood, rushes abord the First Lady's Airship and locks herself in a room while Booker puts in coordinates for their next destination. When Elizabeth emerges, Booker sees that she has cut off her ponytail and changed into her mother's dress. She asks him how he can forget what he has done, and he replies that he doesn't forget; he just learns to live with it.

Abruptly, Songbird attacks and the zeppelin crashes just outside of the Emporia Towers. Booker and Elizabeth enter Emporia to find the Lutece twins, who reveal to them that the Songbird is being controlled by a series of musical notes through a device called the "whistler," and if one knows the proper notes and finds the device, they will be able to control him. The two continue on to Emporia as the Vox push the rich out of their homes, and also as Songbird constantly pursues them. Elizabeth, believing that going back to her prison on monument island is fate equal to death, makes Booker promise to kill her if the Songbird has a chance of capturing her. They continue on to the Port to discover that the key needed to enter the lift to Comstock House requires a handprint.
Emporia
Alternate Reality Trip
In the house, the Songbird attacks them again. Before Booker is killed, Elizabeth stops it by surrendering, and the mechanical creature takes her away. Booker attempts to follow Elizabeth across the bridge, but runs into a white fog and is surprised to see it is now snowing on the other side.

While in a medical facility, Booker searches for Elizabeth, and finds multiple tears revealing that Booker disappeared for six months while coming to rescue her, leaving Comstock to mold her into the role he has intended for her.

When he finally finds Elizabeth, she is decades older than when he left her. This Elizabeth reveals that she broke—not to Comstock's torture and indoctrination procedures, but to time, which rotted away her hope.

Unknowingly, Booker had traveled through a Tear provided by this Elizabeth to a timeline where Booker DeWitt and Elizabeth meet, but Elizabeth is recaptured by Songbird, Columbia emerges from isolation and brazenly attacks New York City. Zachary Comstock's prophecy that Elizabeth would lead Columbia to "drown in flame the mountains of man" is fulfilled.

The elderly Elizabeth, responsible for the leadup to the attack but unable to prevent it herself, had summoned Booker to this time from 1912 to give him a ciphered message so that this reality can be avoided. She gives Booker the ciphered message card to give to her younger self in order to stop these events from happening, and then sends Booker back to save Elizabeth.
The Lottery
Dreaming, Booker finds himself in his office and hears a voice demanding him to "bring us the girl and wipe away the debt." Opening the door, Booker sees New York City—in the year 1984—under attack by Columbia. Booker awakens and finally enters the city; he has arrived on the day of the city's fair. Meanwhile, he is contacted by Rosalind Lutece via telegram; she warns him not to alert Comstock to his presence, and not to choose #77. Booker later encounters Rosalind and her "twin", Robert, as they make bets on the flip of a coin. Booker attends a raffle and eventfully chooses #77, which wins him the first chance to throw the ball at an interracial couple. Before throwing the ball—either at the couple, or the announcer of the raffle, Jeremiah Fink—he is seized by the police when his right hand (which is branded as A.D.) is identified as the hand of the "False Shepard," who is prophesied by Comstock to be the one who will bring about the city's downfall by "leading the lamb (of Columbia) astray."

Booker is forced to fight his way through the streets of Columbia, and, again, encounters the Lutece Twins, who supply him with a Shield. Making his way to Monument Island—the location where he will find Elizabeth—Booker is contacted by Zachary Comstock himself, who tells him he knows much about Booker's past and that his quest will end in blood.
Battleship Bay
Booker dreams, finding himself in his office again. This time, Elizabeth is present, as well as the voice from the previous dream. Both have the same words for Booker: "Bring us the girl, and wipe away the debt." Opening the door and calling out the name "Anna," Booker awakens to find Elizabeth kneeling over him. Spotting the First Lady's Aerodrome, Booker convinces Elizabeth to come with him so that they can go to Paris, which was what she always dreamed of.

While in Columbia, Booker learns that the city is in the midst of a war between The Founders, a faction of the white and rich supremacists led by Comstock, and the Vox Populi, a multi-racial and multi-nationality group of the poor and the working class. Both factions desire Elizabeth and her powers, believing they can use her to turn the tide of the war in their favor. While searching for the First Lady's zeppelin, Booker witnesses Elizabeth's ability first hand; the city is riddled with shimmering rips in the air known as Tears, which are windows or doors to other universes and other times. Elizabeth has the ability to widen these Tears and manipulate them by transporting objects from other realities to the reality she is in.
The Graveyard
Realizing there is a graveyard nearby, Elizabeth decides to find her preserved mother's grave and take her hand. Comstock discovers this plan and uses the Tesla machine to open a tear in which Lady Comstock is a creature both alive and dead, and has a personality manifesting Elizabeth's attitude towards Lady Comstock—anger and resentment over her abandonment of a child she called a bastard—this transforms Lady Comstock into a Siren, a creature that is able to resurrect the dead. The Luteces tell Booker and Elizabeth that in order to stop Lady Comstock, she must open several tears to reveal the truth to Lady Comstock.


The Truth
It is revealed through the tears that Rosalind created the Siphon, a machine that opens Tears into other universes. This is how she found her twin brother, Robert, who is her male counterpart in another universe. Comstock used this machine to look into the future, which is how he knows so much about Booker's past. One of Comstock's prophecies is represented in the dream Booker had, in which Columbia will reign fire on America. Comstock wanted a child to fulfill this prophecy. However, the use of trans-dimensional travel rendered him infertile and caused him to age rapidly—he looks to be in his seventies/eighties, and yet, claimed to have been born in 1874. Comstock used the Luteces' machine to travel into another universe so that he could take another's child—Elizabeth—for his own. Knowing that his wife would eventually reveal that the child was not hers, Comstock had her killed and blamed their servant, Daisy Fitzroy, for the murder. After returning to Comstock House, Elizabeth apologizes to Lady Comstock for her hatred toward her, and Lady Comstock opens the gates, returning to her rest shortly afterward.
Escaping Columbia
Booker arrives just as Elizabeth is being prepared for surgery, and frees her. He gives her the card, which she can read except for the cage symbol. They board Comstock's airship and fight their way to the bridge. They finally confront Comstock, in his cabin, and he tells Elizabeth that Booker is responsible for what happened to her missing finger. The two also discover that Comstock foresaw the events that have taken place, in which Booker (with the A.D. brand) would come take Elizabeth from him. Comstock then grabs her, demanding that Booker tell the truth; this causes Booker to seize him by the throat. Comstock says "It is finished." before Booker kills him. Elizabeth thinks Comstock was telling the truth and Booker doesn't remember, and the two decide to continue on to find out.
Booker DeWitt, remorseful for his actions at Wounded Knee, attends a baptism ceremony presided over by Preacher Witting.

Defending the Zeppelin
On the bridge, as the zeppelin comes under attack by the Vox Populi, Elizabeth realizes that the cage symbol in the message her older self gave her hints to how Songbird can be controlled through the musical notes C, A, G, and E. With Songbird under their control, Elizabeth and Booker manage to defend their airship and defeat the Vox fleet.
Destroying the Siphon
At the ship's bow, they see the Siphon—the machine made by Rosalind Lutece that limited and harnessed Elizabeth's powers—still inside the remains of the statue on Monument Island. The machine's sabotage from when the Luteces were murdered ripped through the realities Columbia existed in and created the Tears everyone sees and Elizabeth can open. The Siphon now acts to repress Elizabeth's ability to create and open any tear and reality she tries to. Set on finding the truth, Booker uses the "whistler" to command Songbird to destroy the Siphon.
Rapture
As the Siphon is destroyed, a massive shockwave resonates, and the "whistler" pulses with electricity, causing Booker to drop it. Now free of the device's control, Songbird comes to claim Elizabeth again, but, with her powers fully restored, Elizabeth transports herself, Booker and the Songbird to the underwater city of Rapture— She and Booker are inside a building, with the Songbird stuck outside underwater; its eyes burst and it dies, its body sinking to the ocean floor. Booker and Elizabeth then leave Rapture via a Bathysphere and emerge on the surface, next to a lighthouse—the same lighthouse that Jack would come across at the beginning of his journey, in 1960. A key materializes in Elizabeth's right hand—it was always there; she just didn't see it—She uses it to open the lighthouse door, and she and Booker come across an infinite number of lighthouses.
Infinite Lighthouses
Elizabeth reveals that the stars they see are all doors opening at once and that the Lighthouse to Rapture is a door to many other doors; the infinite number of lighthouses are paths to realities, where constants and variables give birth to other worlds with other consequences. Elizabeth also reveals that through these tears and doors, she and Booker will discover the truth about her finger, her abilities, and Comstock.

After two areas of infinite lighthouses, Booker and Elizabeth come across a point in time when Booker came to a river near a Preacher's farm after his actions at Wounded Knee. Because of the atrocities he committed, he sought baptism in order to be absolved of all his sins and be reborn as a different man. However, disillusioned, Booker refused the baptism at the last moment.
Booker then follows Elizabeth through another door. The door takes him back to his office on the day he made the deal with the man. He relives the day he made the original deal to surrender Anna and his regret of not being able to get her back. With this, the truth is revealed; Elizabeth is actually Anna DeWitt—Booker's own daughter. Booker and Elizabeth now realize that they must undo everything that Comstock has done, and the only way to do so is by killing him—not as an adult, but by killing him as an infant and "smother[ing] him in the crib."
Booker Remembers
Elizabeth opens a door back to Booker's baptism, over twenty years prior. After realizing that is not the place he expected, Booker also notices some differences in Elizabeth that stands with him and doubts her authenticity. Almost immediately, several other versions show up on the screen as well. They reveal that, when he rejected the baptism, he created another universe—one in which he did accept the baptism. In the universe where he accepted the baptism, he changed his name, and went on to build Columbia, become infertile, and take Anna away from Booker—her real father.
Accept or Decline
Baptism
Booker drowns and is unable to make The Choice
The bifurcation point is when Booker decides to accept baptism at Preacher's farm or not. Booker realizes this, and allows the ensemble of Annas/Elizabeths to drown him, preventing his alternate self from being reborn as Comstock.

Since Comstock has been erased from the timeline, the events of Bioshock Infinite never took place. One by one, the Elizabeths begin to disappear until there is only one.

The screen cuts to black before it is shown whether the last one too disappears or not. It could be said that due to the last Elizabeth been able to travel trans-dimensionally that the rules of existence no longer apply to her and any paradoxes surrounding her existence would also not apply.
December 31, 1983
The Events Of Bioshock Infinite Begin
Epilogue
His eyes opening, Booker finds himself back in his apartment on October the 8th, 1893; the date he gave up his daughter to Comstock. This time, however, Robert Lutece is not there, because Comstock never existed. While calling out Anna's name, Booker opens the door next to his desk, and sees his daughter's crib, before it cuts to black.
The End
Bioshock Infinite:
Timeline

December 29, 1890
At the age of sixteen, he was part of the 7th Cavalry Regiment of the United States Army, and was present at the Battle of Wounded Knee. However, in front of his comrades, his Sergeant said that DeWitt was part Native American. Upset over being stigmatized, DeWitt viciously slaughters the Native American combatants, in an overzealous attempt to earn the respect of his comrades and distance himself from his ancestry. Due to his gruesome actions at the battle, other members of his regiment, including Cornelius Slate, gave him the nickname "The White Injun," because of his habit of taking trophies from his victims. Although he was seen as a hero to his U.S. Army men, Booker felt shame and regret for his unforgiveable actions.
April 19, 1874
Booker Dewitt is Born
1891-1892
Decline
Booker refuses his baptism at the last minute thinking that his sins could not be washed away by a "dunk in the river"and immerses himself in alcoholism and gambling instead.

Accept
Booker accepts baptism and is born again, taking on the name of Zachary Hale Comstock. After the baptism, Comstock became a deeply religious man, and he used his newfound faith to reshape his identity. He soon became a powerful man with a strong pull in the United States government.
1892
Booker's daughter, Anna DeWitt, is born. Her mother dies in childbirth. Dealing with the scars of Wounded Knee, the grief of her death, and the stress of becoming a single father, Booker began to drink and gamble. He later became a Pinkerton Agent, tasked with breaking up union strike efforts, but was discharged due to his use of extreme methods on the job. Following his discharge from the Pinkerton Agency, he became a private investigator, but his alcoholism and gambling addiction intensified.
Comstock successfully convinces the U.S. Congress to provide funding for the construction of a city he intends to make a modern-day ark. Comstock oversaw the construction of the city, which he named Columbia. It was launched in 1893 with much fanfare, and Comstock became its leader, creating a political party of all whites called The Founders.
1893
Rosalind Lutece
A physicist who had worked many years with the curiosity of multiple realities. In the course of experimentation with atoms, she was able to indefinitely suspend an atom in midair--her colleagues referred to the process as "quantum levitation," while Rosalind herself dubbed it the "Lutece Field." She began to wonder about the possibility of suspending larger objects, up to and including a city.
May 1 - October 30:
The fair gives rise to the concept of American exceptionalism. The star attraction of the exposition is the floating city of Columbia, an ambitious project envisioned by the self-proclaimed prophet Zachary Hale Comstock, designed by Rosalind and Robert Lutece, and funded by the U.S. government.
The 1893 Chicago Worlds Fair occurs.
October 15th, 1893
Rosalind successfully opened a Tear for the first time, bringing Robert through it into her universe. The two then created a contraption that allowed them to enter other realities via the Tears.
Continued experimentation with the Lutece Field led to Rosalind's first interaction with Robert Lutece, a male version of herself from an alternate reality who was performing the same exact experiment. By manipulating a pair of quantumly entangled atoms, the two were able to communicate across space-time barriers through Morse code. When she reported this information to Comstock, he instructed her to find a way of accessing such alternate realities, which he believed would act as windows into prophecy.
Rosalind met Zachary Hale Comstock, then a prominent U.S. politician who took great interest in her work. Comstock agreed to fund continued research into the Lutece Field in return for her help constructing a floating city he had seen in a premonition.
Too Much Use
Comstock used the device extensively to see other realities and predict future happenings. Due to Comstock's use of the tears, the people of Columbia saw him as a true prophet, and began to worship him. He also provided access to the Fink brothers. However, the device had an adverse affect on Comstock, aging him rapidly and rendering him sterile.
August 12, 1894
Jeremiah was a business man with a manufacturing monopoly within Columbia. He first learned of Tears because of his brother Albert. He questioned them until Albert made a fortune off of them. He then looked through Tears to advance and expand his company's inventions.
Rosalind meets Comstock
Accessing Alternates
Albert's Melodies
Once Albert gained access to Tears, he would open them in his studio to hear the songs from the future and then he added period-appropriate harmonizations and stylizations to the existing melodies. He became one of the most celebrated composers of Columbia. He began to run the Magical Melodies studio in Emporia and managed to achieve great success via the release of several extremely successful songs.
Jeremiah's Inventions
Comstock looked through Tears and saw that Columbia would only prosper as long as his bloodline sat the throne. However, he had become sterile and desperate to have a blood successor. Comstock approached Rosalind and Robert for a solution. The three deduced that a true heir could be procured from another universe. The Luteces then sought out Comstock's former self, Booker DeWitt, from the alternate universe Robert was originally from.
An Heir to the Prophecy
The Plan Of Colombia
Lady A. Comstock
Before Columbia, she selfishly took advantage of the numerous suitors who admired her. Comstock offered her redemption for her sins and his hand in marriage. She took on the elevated position of First Lady of Columbia and spread Comstock's teachings to its citizenry, who deeply respected her. Her audio logs affirm Lady Comstock's deep admiration and love for Zachary Comstock for forgiving her sins and giving her another chance. However, she began to question her faith in her husband after seeing how cruel and unforgiving he could be to those who opposed him.
October 8, 1893
Robert Lutece shows up at Booker DeWitt's door with an offer he cannot refuse from Father Comstock. He convinced him that they would wipe away his extensive gambling debts in exchange for his infant daughter, Anna. Booker is faced with no other choice and hands over Anna.
Regret
After Booker reluctantly handed her over, he regretted his choice immediately, and pursued Comstock's agent. Booker found Robert Lutece with Comstock and Anna in an alleyway, near a strange portal with a Rosalind Lutece inside. Booker grabbed Comstock as the latter stepped through the portal, and tried to wrestle Anna from his grasp as Comstock ordered the portal shut. Comstock was able to shake Booker off, and the portal closed just as Anna reached out to Booker, severing her pinkie finger in the process. Overcome with regret, Booker fell even further into alcoholism and his gambling habits worsened. Though he closed the door in his rotting apartment to Anna's room, he eventually branded his hand with Anna's initials, "AD," so he'd never be able to forget his failure. Booker then spent nearly twenty years living in grief and despair.
Comstock began to see America as "the New Eden," and the Founding Fathers as prophets of God's Great Plan. However, he also saw Caucasians as the only truly free race, and viewed minority races with contempt. He declared Abraham Lincoln "the Great Apostate" who brought nothing but war and death upon the country. He also saw Columbia as the key to usher the world into righteousness and became determined to make it a reality.

Shortly afterwards, Comstock would marry one of his devotees, Lady Comstock.
The New Eden
Presentation
1901
Seen as a floating symbol of American ideals at a time when the United States was becoming a world power, Columbia was sent to all corners of the globe on a goodwill tour. However, during the Boxer Rebellion in China, Comstock discovered that the Boxers were holding American citizens hostage and ordered Columbia to open fire on the Chinese populace in Peking. This act revealed to the world that Columbia was, in fact, a giant warship.
Comstock saw Anna as the key to making his dream of remaking the world a reality. However, the child was rejected by Lady Comstock, who believed her to be Rosalind and Comstock's bastard child. At Lady Comstock's insistence that the child not live under their roof, Comstock started to create Monument Island to house her. Renaming her Elizabeth, Comstock began to call her the "Lamb of Columbia," and the Founders soon worshiped her as a savior.

Over time, overuse of the Luteces' contraption continued to deteriorate Comstock's body, giving him cancer, and causing him to have the appearance of an old man at thirty-eight. In addition, it gave him knowledge that Booker would eventually find a way to take Elizabeth from him. He began to warn the populace that a "False Shepherd" would appear, and began constructing a plan to make Elizabeth servile to him.
The Lamb of Columbia
Assassinations,
Rebellions, and Murders
Lady Comstock
Lady Comstock was grew frustrated and angry with keeping the truth about Elizabeth from the populace. Knowing that she was going to reveal the truth, Comstock had her killed and framed her servant, Daisy Fitzroy, for her murder. This act set in motion the chain of events that would lead to Fitzroy creating the revolutionary group known as the Vox Populi.

The populace was devastated by the news of her assassination and sought to glorify her memory. Like a Catholic saint, her body was preserved in a memorial shrine while her belongings, such as her trademark blue dress, were treated like holy relics. Comstock, meanwhile, used this frame-up to galvanize his persecution of the Vox Populi.
The Luteces
Comstock soon discovered what the Luteces were doing, and ordered Jeremiah Fink to sabotage their contraption, killing the two as they were using it. As a reward, ownership of the Luteces' patents was turned over to him following their elimination. In actuality, the sabotage caused the Luteces to exist across all space and time, giving them the ability to appear wherever and whenever they wanted. While Rosalind was satisfied with this state, as she would be able to remain with her brother indefinitely, Robert was dissatisfied with the unresolved matter of Elizabeth's fate. Still determined to stop Comstock, they devised a plan to send Booker to Columbia to retrieve his long lost daughter.
1895
As Elizabeth grew older, it was discovered that she had the power to open Tears; Rosalind hypothesized this was due to her finger remaining in her home universe, as it was cut off when the Tear they brought her through closed too soon. Robert and Rosalind then discovered that, through the use of her powers, Elizabeth would fulfill Comstock's prophecy, leading to the destruction of New York City in 1983. Robert, wishing to undo their mistake, issued Rosalind an ultimatum: join him in sending Elizabeth back to her original universe, or he would part ways with her. Unwilling to separate from her "brother," Rosalind agreed to assist him, though she was not optimistic about their chances for success.
October 31st, 1909
Elizabeth's Powers
July 6, 1902
The United States government disavowed Columbia, and ordered Comstock to stand down. Seeing this as a betrayal, Comstock led Columbia to secede from the union, and the city disappeared into the skies. Comstock thereafter declared Columbia the true America, believing the United States to be a shell of its former self and condemning it along with the rest of the world.
Secession
July 23, 1902
A strike occurs among the city's factories and paralyzes part of the production, but then turns into a brutal brawl between the workers and the police, leading to several round-up of insurgents, and death among the policemen. Vox Populi legal expert John Goldman calls for peaceful resolutions to avoid further violence.
February 13, 1903
Daisy Fitzroy reveals herself as the leader of the Vox Populi.
1904
Comstock saw to the creation of the Siphons as her tear-making powers began to develop, in order to keep them in check. The Siphon is installed at Monument Island and begins to limit and harness Elizabeth's powers.

Around this time, Comstock hires Fink Industries to create a guardian for Elizabeth. Jeremiah looks through a Tear and sees a design sheet for a Big Daddy. He calls it a "wonder" and creates a part man-part machine hybrid that becomes known as the Songbird. It was Elizabeth's only company, bringing her such things as books and food. Although it held her captive, the creature was her caretaker and protector. As a child, Elizabeth viewed Songbird as a friend, but later came to hate it for keeping her imprisoned.
1912
Bringing Booker
The twins open a Tear 20 years after the loss of Anna in Booker's apartment in New York to offer Booker to reclaim his daughter. Booker accepts and he goes through the Tear leading him into Comstock's reality.

As a result of crossing over, Booker becomes disoriented and confused and begins to recreate memories from his old ones. He subsequently believes he is going to Columbia to retrieve Elizabeth as part of a job, and forgets the loss of his daughter. Afterwards, the twins take Booker, now with no memories of Anna except the name itself, to a lighthouse, and provide him with a box holding information and supplies related to his "job" to clear his "debts."
Booker enters the lighthouse, and later, a shuttle atop it. He enters the code given to him and boards the shuttle, only to drop his pistol and be launched into the sky, ascending into the city of Columbia.

Upon entering Columbia, Booker is automatically exposed to the religious movement of Columbia and its leader, Zachary Hale Comstock, who is worshipped and seen as a prophet of God. Booker, in order to gain access into Columbia, must be baptized; however, the preacher nearly drowns Booker, sending him into a state of unconsciousness in the process.
Entering Columbia
When Booker reaches Monument Island, he finally meets Elizabeth, who is unaware that she has been observed as a "specimen" for all her life. Booker discovers that Elizabeth has an ability to open portals through dimensional space and time when he sees her turn a picture of the Eiffel Tower into a portal to an actual street in Paris in the year 1983. Booker eventually enters the library and Elizabeth is initially frightened, and throws books at the stranger, but she becomes relieved when she asks Booker if he is real, and he replies that he's "real enough." Using the key given to Booker by the Luteces, he and Elizabeth barely escape from Monument Island, and from her guardian—the 30-ft winged creature known as the Songbird. Booker and Elizabeth then crash-land onto Battleship Bay, rendering Booker unconscious.
Meeting Elizabeth
Before acquiring the Vigor in the Hall of Heroes needed to activate the lift to Lady Comstock's Aerodrome, Booker and Elizabeth discover more about Comstock and the creation of Columbia.

Despite Booker being present at the Battle of Wounded Knee and having no recollection of such, Comstock was also apparently present and was a hero of the battle. Later on in life, he claimed to have seen the archangel Columbia, who showed him a vision of the future, a future with a floating city in the sky. This experience made him see himself as a Prophet of God. After the floating City of Colombia's completion in 1900, Columbia traveled across the world until 1901, when it fired on Peking, China during the Boxer Rebellion and Congress subsequently demanded that Columbia return to mainland America. Comstock, feeling betrayed and believing that America's ideals were fading, led Columbia in its secession from the United States, and, afterwards, it vanished into the clouds.
Getting to the Airship
Fink
In the new reality, the Vox have rebelled against Jeremiah Fink, and the Booker in this reality was a hero who died for the Vox cause. Fitzroy, encountering Booker, proclaims him "either an imposter or a ghost" and orders her troops to attack him because she wants him to remain a martyr. She then kills Fink and threatens to kill a little boy, claiming that doing so is the only way to eliminate the Founders. But, before she can kill the boy, Elizabeth sneaks up behind Fitzroy and stabs her in the back, leading to her death.
Slate
In the Hall of Heroes, Booker encounters a fellow soldier from Wounded Knee, Cornelius Slate, who is fighting with the Vox Populi against Comstock. Slate reveals that Booker's instincts are correct—Comstock was never there, nor was he on the battlefield during the Boxer Rebellion. Booker and Elizabeth also discover that she is Comstock's daughter, which is why Comstock is relentless in his pursuit of her—He wants his heir to "sit the throne, and drown in flame the mountains of man." After fighting Slate and his men—and either killing or sparing Slate—Booker acquires Shock Jockey and escorts Elizabeth to the First Lady's Aerodome. As Booker sets the zeppelin's course, Elizabeth discovers that he had lied to her—the coordinates he put in were taking them to New York, not Paris—Angered, she hits Booker with a wrench and knocks him out. She eventually leaves the zeppelin, which is hijacked by Vox Populi.
Fitzroy
Regaining consciousness, Booker meets Daisy Fitzroy and they make a deal—Booker will go to the gunsmith Chen Lin and get weapons for the Vox and, in exchange, Fitzroy will return the zeppelin. Booker is dropped into Finkton, where he meets up with Elizabeth. She agrees to join him only so that she can reach Paris. The two continue into the industrial zones and the shanty-towns of the poor. They eventually find Chen Lin—tortured to death.

Suddenly, the Lutece twins appear before them and reveal that Lin, like Schrödinger's Cat, is both alive and dead in other worlds. Elizabeth opens a tear in which Lin did not die. However, now everyone that died in the reality they just left (including Lin) remembers being dead, and Lin believes that his machines are there when they aren't. Lin has also had his tools seized by the police in this alternate Columbia, and when Booker and Elizabeth find them, they are forced to open another tear in which the weapons are in the possession of the Vox.
Elizabeth, remorseful and covered in blood, rushes abord the First Lady's Airship and locks herself in a room while Booker puts in coordinates for their next destination. When Elizabeth emerges, Booker sees that she has cut off her ponytail and changed into her mother's dress. She asks him how he can forget what he has done, and he replies that he doesn't forget; he just learns to live with it.

Abruptly, Songbird attacks and the zeppelin crashes just outside of the Emporia Towers. Booker and Elizabeth enter Emporia to find the Lutece twins, who reveal to them that the Songbird is being controlled by a series of musical notes through a device called the "whistler," and if one knows the proper notes and finds the device, they will be able to control him. The two continue on to Emporia as the Vox push the rich out of their homes, and also as Songbird constantly pursues them. Elizabeth, believing that going back to her prison on monument island is fate equal to death, makes Booker promise to kill her if the Songbird has a chance of capturing her. They continue on to the Port to discover that the key needed to enter the lift to Comstock House requires a handprint.
Emporia
Alternate Reality Trip
In the house, the Songbird attacks them again. Before Booker is killed, Elizabeth stops it by surrendering, and the mechanical creature takes her away. Booker attempts to follow Elizabeth across the bridge, but runs into a white fog and is surprised to see it is now snowing on the other side.

While in a medical facility, Booker searches for Elizabeth, and finds multiple tears revealing that Booker disappeared for six months while coming to rescue her, leaving Comstock to mold her into the role he has intended for her.

When he finally finds Elizabeth, she is decades older than when he left her. This Elizabeth reveals that she broke—not to Comstock's torture and indoctrination procedures, but to time, which rotted away her hope.

Unknowingly, Booker had traveled through a Tear provided by this Elizabeth to a timeline where Booker DeWitt and Elizabeth meet, but Elizabeth is recaptured by Songbird, Columbia emerges from isolation and brazenly attacks New York City. Zachary Comstock's prophecy that Elizabeth would lead Columbia to "drown in flame the mountains of man" is fulfilled.

The elderly Elizabeth, responsible for the leadup to the attack but unable to prevent it herself, had summoned Booker to this time from 1912 to give him a ciphered message so that this reality can be avoided. She gives Booker the ciphered message card to give to her younger self in order to stop these events from happening, and then sends Booker back to save Elizabeth.
The Lottery
Dreaming, Booker finds himself in his office and hears a voice demanding him to "bring us the girl and wipe away the debt." Opening the door, Booker sees New York City—in the year 1984—under attack by Columbia. Booker awakens and finally enters the city; he has arrived on the day of the city's fair. Meanwhile, he is contacted by Rosalind Lutece via telegram; she warns him not to alert Comstock to his presence, and not to choose #77. Booker later encounters Rosalind and her "twin", Robert, as they make bets on the flip of a coin. Booker attends a raffle and eventfully chooses #77, which wins him the first chance to throw the ball at an interracial couple. Before throwing the ball—either at the couple, or the announcer of the raffle, Jeremiah Fink—he is seized by the police when his right hand (which is branded as A.D.) is identified as the hand of the "False Shepard," who is prophesied by Comstock to be the one who will bring about the city's downfall by "leading the lamb (of Columbia) astray."

Booker is forced to fight his way through the streets of Columbia, and, again, encounters the Lutece Twins, who supply him with a Shield. Making his way to Monument Island—the location where he will find Elizabeth—Booker is contacted by Zachary Comstock himself, who tells him he knows much about Booker's past and that his quest will end in blood.
Battleship Bay
Booker dreams, finding himself in his office again. This time, Elizabeth is present, as well as the voice from the previous dream. Both have the same words for Booker: "Bring us the girl, and wipe away the debt." Opening the door and calling out the name "Anna," Booker awakens to find Elizabeth kneeling over him. Spotting the First Lady's Aerodrome, Booker convinces Elizabeth to come with him so that they can go to Paris, which was what she always dreamed of.

While in Columbia, Booker learns that the city is in the midst of a war between The Founders, a faction of the white and rich supremacists led by Comstock, and the Vox Populi, a multi-racial and multi-nationality group of the poor and the working class. Both factions desire Elizabeth and her powers, believing they can use her to turn the tide of the war in their favor. While searching for the First Lady's zeppelin, Booker witnesses Elizabeth's ability first hand; the city is riddled with shimmering rips in the air known as Tears, which are windows or doors to other universes and other times. Elizabeth has the ability to widen these Tears and manipulate them by transporting objects from other realities to the reality she is in.
The Graveyard
Realizing there is a graveyard nearby, Elizabeth decides to find her preserved mother's grave and take her hand. Comstock discovers this plan and uses the Tesla machine to open a tear in which Lady Comstock is a creature both alive and dead, and has a personality manifesting Elizabeth's attitude towards Lady Comstock—anger and resentment over her abandonment of a child she called a bastard—this transforms Lady Comstock into a Siren, a creature that is able to resurrect the dead. The Luteces tell Booker and Elizabeth that in order to stop Lady Comstock, she must open several tears to reveal the truth to Lady Comstock.


The Truth
It is revealed through the tears that Rosalind created the Siphon, a machine that opens Tears into other universes. This is how she found her twin brother, Robert, who is her male counterpart in another universe. Comstock used this machine to look into the future, which is how he knows so much about Booker's past. One of Comstock's prophecies is represented in the dream Booker had, in which Columbia will reign fire on America. Comstock wanted a child to fulfill this prophecy. However, the use of trans-dimensional travel rendered him infertile and caused him to age rapidly—he looks to be in his seventies/eighties, and yet, claimed to have been born in 1874. Comstock used the Luteces' machine to travel into another universe so that he could take another's child—Elizabeth—for his own. Knowing that his wife would eventually reveal that the child was not hers, Comstock had her killed and blamed their servant, Daisy Fitzroy, for the murder. After returning to Comstock House, Elizabeth apologizes to Lady Comstock for her hatred toward her, and Lady Comstock opens the gates, returning to her rest shortly afterward.
Escaping Columbia
Booker arrives just as Elizabeth is being prepared for surgery, and frees her. He gives her the card, which she can read except for the cage symbol. They board Comstock's airship and fight their way to the bridge. They finally confront Comstock, in his cabin, and he tells Elizabeth that Booker is responsible for what happened to her missing finger. The two also discover that Comstock foresaw the events that have taken place, in which Booker (with the A.D. brand) would come take Elizabeth from him. Comstock then grabs her, demanding that Booker tell the truth; this causes Booker to seize him by the throat. Comstock says "It is finished." before Booker kills him. Elizabeth thinks Comstock was telling the truth and Booker doesn't remember, and the two decide to continue on to find out.
Booker DeWitt, remorseful for his actions at Wounded Knee, attends a baptism ceremony presided over by Preacher Witting.

Defending the Zeppelin
On the bridge, as the zeppelin comes under attack by the Vox Populi, Elizabeth realizes that the cage symbol in the message her older self gave her hints to how Songbird can be controlled through the musical notes C, A, G, and E. With Songbird under their control, Elizabeth and Booker manage to defend their airship and defeat the Vox fleet.
Destroying the Siphon
At the ship's bow, they see the Siphon—the machine made by Rosalind Lutece that limited and harnessed Elizabeth's powers—still inside the remains of the statue on Monument Island. The machine's sabotage from when the Luteces were murdered ripped through the realities Columbia existed in and created the Tears everyone sees and Elizabeth can open. The Siphon now acts to repress Elizabeth's ability to create and open any tear and reality she tries to. Set on finding the truth, Booker uses the "whistler" to command Songbird to destroy the Siphon.
Rapture
As the Siphon is destroyed, a massive shockwave resonates, and the "whistler" pulses with electricity, causing Booker to drop it. Now free of the device's control, Songbird comes to claim Elizabeth again, but, with her powers fully restored, Elizabeth transports herself, Booker and the Songbird to the underwater city of Rapture— She and Booker are inside a building, with the Songbird stuck outside underwater; its eyes burst and it dies, its body sinking to the ocean floor. Booker and Elizabeth then leave Rapture via a Bathysphere and emerge on the surface, next to a lighthouse—the same lighthouse that Jack would come across at the beginning of his journey, in 1960. A key materializes in Elizabeth's right hand—it was always there; she just didn't see it—She uses it to open the lighthouse door, and she and Booker come across an infinite number of lighthouses.
Infinite Lighthouses
Elizabeth reveals that the stars they see are all doors opening at once and that the Lighthouse to Rapture is a door to many other doors; the infinite number of lighthouses are paths to realities, where constants and variables give birth to other worlds with other consequences. Elizabeth also reveals that through these tears and doors, she and Booker will discover the truth about her finger, her abilities, and Comstock.

After two areas of infinite lighthouses, Booker and Elizabeth come across a point in time when Booker came to a river near a Preacher's farm after his actions at Wounded Knee. Because of the atrocities he committed, he sought baptism in order to be absolved of all his sins and be reborn as a different man. However, disillusioned, Booker refused the baptism at the last moment.
Booker then follows Elizabeth through another door. The door takes him back to his office on the day he made the deal with the man. He relives the day he made the original deal to surrender Anna and his regret of not being able to get her back. With this, the truth is revealed; Elizabeth is actually Anna DeWitt—Booker's own daughter. Booker and Elizabeth now realize that they must undo everything that Comstock has done, and the only way to do so is by killing him—not as an adult, but by killing him as an infant and "smother[ing] him in the crib."
Booker Remembers
Elizabeth opens a door back to Booker's baptism, over twenty years prior. After realizing that is not the place he expected, Booker also notices some differences in Elizabeth that stands with him and doubts her authenticity. Almost immediately, several other versions show up on the screen as well. They reveal that, when he rejected the baptism, he created another universe—one in which he did accept the baptism. In the universe where he accepted the baptism, he changed his name, and went on to build Columbia, become infertile, and take Anna away from Booker—her real father.
Accept or Decline
Baptism
Booker drowns and is unable to make The Choice
The bifurcation point is when Booker decides to accept baptism at Preacher's farm or not. Booker realizes this, and allows the ensemble of Annas/Elizabeths to drown him, preventing his alternate self from being reborn as Comstock.

Since Comstock has been erased from the timeline, the events of Bioshock Infinite never took place. One by one, the Elizabeths begin to disappear until there is only one.

The screen cuts to black before it is shown whether the last one too disappears or not. It could be said that due to the last Elizabeth been able to travel trans-dimensionally that the rules of existence no longer apply to her and any paradoxes surrounding her existence would also not apply.
December 31, 1983
The Events Of Bioshock Infinite Begin
Epilogue
His eyes opening, Booker finds himself back in his apartment on October the 8th, 1893; the date he gave up his daughter to Comstock. This time, however, Robert Lutece is not there, because Comstock never existed. While calling out Anna's name, Booker opens the door next to his desk, and sees his daughter's crib, before it cuts to black.
The End
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