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Advances in Forensic Science

Keys to Building Effective Partnerships

Mitch Morrissey

on 31 January 2015

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Transcript of Advances in Forensic Science

To work with the community to create a model environment which offers outreach as well as innovative, specialized, seamless and integrated services to all victims of crime, helping to strengthen and restore the fabric of our community.
Advances in ForensicSciences
Mitch Morrissey and Gregg LaBerge

Thank you!
A field of science dedicated to the methodical gathering and analysis of evidence to establish facts that can be presented in a legal proceeding.

Forensic Databases
Forensic DNA
Other Forensic Sciences
Linking Cases to Suspects

Linking Cases to Cases

Fingerprints - AFIS

Ballistics - IBIS

Prove Identity

Reconstruct a Scene

Catch Serial Criminals

Provide Evidence When the Victim Cannot

Support Witness Credibility

Defeat An Alibi

Force a Defendant into
Absurd Explanations

Prosecute “Upstanding” Members of the Community

Claims of Innocence and Exonerations
Forensic Photography
GSR Testing

Forensic Composite Art

Forensic Toxicology

Glass Examinations

Forensic Image Enhancement

Blood Stain Pattern Interpretation

Hair Examinations


Forensic Chemistry


Forensic Botanists

Soil Examinations

Shoeprint Examinations

Audio Experts

Forensic Odontology

Tool mark Examinations

Fingerprint Examinations

Fiber Examinations

mtDNA Testing

DNA Testing

Rope & Cord Examinations

Forensic Pathologists

Forensic Entomology

Ink Examinations

Advances in Forensic

Fingerprint Examinations
Digital Forensics

Forensic Photography Systems

DNA and Fibers from the Victim found on the undercarriage of the car.

Forensic Pathology

Identifying Homicide Victim’s Remains

Chemical Examinations

Case Study - Home Invasion Robbery

750 S. Harrison

Victim Eventual Identifies the Defendant

1355 Krameria

2900 E. 31st Ave

The major source of both blood stains match the defendant
1 in 150 trillion - Defendant’s DNA

Minor source - victim cannot be excluded 1 in 1,700

Defendant’s Home
3290 Jasmine

Victim's car and others items were stolen from the home.
Scientific evidence must be "generally accepted" by a meaningful segment of the associated scientific community.
Rejected by the U.S. Supreme Court in the Daubert case.
Frye is still in use by 13 states.

Frye Test (1923)
Non‐exclusive reliability checklist for courts
(1) Whether the expert’s technique or theory can be or has been tested.
(2) Whether the theory or technique has been subjected to peer
review and publication.
(3) The known or potential error rate of the technique or theory
when applied.
(4) The existence and maintenance of standards and controls.
(5) Whether the theory or technique has been generally accepted
in the scientific community.

Used in all federal courts and has been adopted by 11 states.

Daubert Standard (1993)
If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise, if
(1) the testimony is based upon sufficient facts or data,
(2) the testimony is the product of reliable principles and methods,
(3) the witness has applied the principles and methods reliably to the facts of the case.

Rule 702. Testimony by Experts

Designed to be a “liberal” standard
Legal Admissibility Tests for Forensic Evidence
Green Cloth Gloves
The victim could not be excluded from the mixture of DNA found in the blood stain from the outside index finger of one of the gloves (1 in 83,000).
Victim's TV and DVD
The victim identified the defendant
The DNA evidence
The footprint evidence
The evidence in her car - DNA and receipt
The evidence from the King Soopers - video and cigarettes
The evidence found in the defendant’s house - TV and DVD player, shoes, gloves and cell phone.
The cell phone and supervision records

The defendant cannot be excluded from the mixture of DNA found in the shoes
Right Shoe - 1 in 100,000
Left shoe - 1 in 5,300

It All Fit

Cell Phone Data for June 16, 2008
A call before and after the crime.
Tower 5 blocks away
4 calls while at the store
5 blocks away
Cellphone Tracking

Trace Evidence Examinations
Hair, Fiber, Glass Examinations
Home 4:59PM
Call on tower 8 blocks away
Tower 11 blocks from where the victim's car was found
5:09PM call
Home 6:00PM
11 calls
between 6:00PM and 6:15PM
8 blocks away
The source of both blood stains match the victim
1 in 25 trillion - the victim’s DNA

The major source of both blood stains match the defendant 1 in 150 - Defendant's DNA
Minor Source - victim cannot be excluded 1 in 1,700
The defendant cannot be excluded from the mixture of DNA found in the shoes:
Right Shoe - 1 in 100,000
Left Shoe - 1 in 5,300
Full transcript