Purrfect Match Case Study: Solving a Homicide Mystery

Explore the forensic investigation of a homicide case involving Doug Beamish, his wife Shirley Duguay, and a cat named Snowball. Evidence such as blood analysis, hair samples, and DNA matching led to Beamish being charged, convicted, and sentenced to prison for 18 years. Dive into the details of this intriguing case to learn how forensic science played a crucial role in securing justice.

• Forensic investigation
• Homicide case
• DNA analysis
• Criminal justice
• Case study

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1. CSI Unit Training Materials Case Study: Case Study: Purrfect Match Purrfect Match Complete the slide as we watch the video. T. Tomm Updated 2023 https://sciencespot.net https://www.youtube.com/watch?v=_8x-JL3MalU T. Tomm 2007 Updated 2023 https://sciencespot.net/

2. FORENSIC FILES: PURR-FECT MATCH Fill in the Part A as you watch the first segment video. We will stop several times to review the evidence.

3. FORENSIC FILES: PURR-FECT MATCH KEY What was the crime? Homicide? Type of Crime: 10/7 Car reported 10/3 Date of disappearance October 1994 Date: Prince Edward Island, Canada Location: Shirley Duguay Victim(s): Doug Beamish (Husband) Suspect(s):

4. Lets investigate more fill in your chart as we explore the evidence.

5. Evidence What did it tell the investigators about the crime? Shirley 1 Owner - 2 Blood in car/on pillow - 3 Blood - 4 Unidentified blood- 1 First hairs 2 Second set- 1 Blood - 2 Size- 1 Size - 2 Wear pattern- Matched to Shirley Car Medium impact spatter Matched to Snowball Matched to Shirley Matched to Snowball Matched to Shirley Would fit Doug Same as Doug Similar to Doug s pattern Shovel Shows Doug wearing the jacket Doug had history of violence Separated not divorced DNA matched to Snowball Hairs Jacket Shoes Body Picture 1 Wounds from Shows - 1 History 2 Marital status - Motive Other Hair root

6. Part C: Answer the questions. What did you pick? Why? Beamish was charged with murder; convicted and sentenced to 18 years in prison