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El Segundo Double Cop Murders, 1957
Transcript
El Segundo Double Cop Murders, 1957
Salena G. Monaco
FORS-4416-02
Professor Palmbach
The Final Try
- At the time IAFIS had a different name, the database was fairly new, and it did not have nearly as many prints.
- Gerald F. Mason's two prints were "stitched" together and there was an immediate match.
Past Fingerprinting
1863: Paul-Jean Coulier
1880: Dr. Henry Faulds (research)
- The reason why we say, no two fingerprints look alike.
Present Database
IAFIS (Integrated Automated Fingerprint Identification System): Includes more than just fingerprints
- 70 million criminal plus 34 million civil prints
- Largest national database
July 21st, 1957
Latent Fingerprinting Now
- The basic dusting method is still used today.
- ALS (Alternate Light Source)
- Cyanoacrylate
- Chemical Developers like Ninhydrin or DFO (1,2-Diazafluoren-9-one)
- Other methods are used for bloody fingerprints
- Gerald Fatten Mason kidnapped four teenagers.
- Sexually harassed two of the male teenagers and one female; one 16 and one 17 and 15.
- Raped one of the female teenager; 15.
- Proceeded to steel their car.
- Mason got pulled over and shot the two officers.
- The car was left further down the road where essential evidence was found.
Case Fingerprints
Can anyone tell me what a latent fingerprint is?
Partial prints were found inside the car but were determined unidentifiable.
The investigators did this using the basic "dusting" method.
- Fingerprint brush
- Bi-chromatic powder
- Lifting Tape
Image by Tom Mooring
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