1. Make sure you have the lab information and colored pencils. 
Lois McArthur Murder
Make sure you have the lab information and colored pencils. 

2. Crime Scene

3. Fingerprint Matchup
Using the packet of rap sheets given, compare the fingerprint from the scene to each of the suspects.
Record your match up on the data sheet and cite specific fingerprint characteristics that match.

4. Handwriting Analysis
Using the packet of rap sheets given, compare the handwriting from the “suicide note” to the writing sample from each of the suspects.
Record your match up on the data sheet and cite letters that match up.

5. Fiber Analysis
Fiber gound at the scene

6. Fibers
Course Cotton Fiber
Cotton Fiber

7. Fibers
Below: Polyester Fiber
Above: Nylon Fiber

8. Fibers
Rayon Fiber

9. Fiber Conclusion Draw all of your sketches on the data sheet.
Match up the fiber found at the scene to the type of cloth and look to see which of the suspects were wearing that fabric.

10. Hair Samples
Hair Found at the Crime Scene

11. Hair Samples Lois McArthur’s Hair Sample - Victim
Catherine McArthur’s Hair –
The victims mother

12. Hair Samples
Luise’s Hair
Maria R’s Hair

13. Hair Samples
Ted’s Hair Sample
Mike H’s Hair

14. Hair Sample Conclusions
Draw all of your sketches on the data sheet.
Match up the hair found at the scene to the hair samples from each of the suspects and the victim.

15. Blood Samples
Identify each persons blood type and record your results on the data sheet.

16. Final Conclusions & Report
Based on your findings, write your investigator’s report being sure to include:
Who did it? (murderer)
Why did they do it? (motive)
Evidence to convict the suspect
Approximate time of the murder