Case 2: The Missing Mascot
Muffy, the prized mascot of the Delta Omega Gamma sorority has been stolen! You must
work together to determine which suspect is guilty.
The Incident Report:
Date of Crime: 1/28/10
Time of Crime: 7:30 pm
Location of Cr
Writing a Group Contract for your Forensic Projects:
Some team members will slack off and leave the rest of you hanging
A team member might call in sick and forget to e-mail their work into the group or
Team members distract each other instead of
Locards Exchange Principle:
Every contact leaves a trace
The value of trace (or contact) forensic evidence was first recognized by Edmund Locard in
1910. He was the director of the very first crime laboratory in existence, located in Lyon, France.
Characteristics of ammunition, firearms, and residue are examined to find matches between
suspects and the evidence found at a crime scene.
Chemical tests can reveal gunshot residue (GSR) on the hands, face, or clothing of a victim or
Each of the 32 teeth in humans is unique due to age and wear.
Impressions and photographs of bite marks left on a victim, assailant, or other object at a crime
scene can often be matched to dental records.
Tiny nicks and chips for
Investigators can extract DNA from almost any tissue, including hair, fingernails, bones, teeth
and body fluids. The DNA is used to create a profile that can be compared to profiles from
suspects or victims.
CODIS (Combined DNA Index System) is a da
Works with a forensic odontologist (dentist) to match dental records
Testifies in court about the identity of the individual and/or the injuries that might be
evident in the skeleton
Blood, semen, saliva, sweat, and ur
Lab # _: Observing Locards Exchange Principle
Edmond Locard (1877-1966) in 1910 persuaded the police department in Lyons, France, to give him
two attic rooms and two assistants to start the world's first police laboratory. During his