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Collection Notes Ms. Engle Forensics Class. Crime Scenes and Evidence As a crime scene investigator: – After a crime: First responder Give aid Interview.

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Presentation on theme: "Collection Notes Ms. Engle Forensics Class. Crime Scenes and Evidence As a crime scene investigator: – After a crime: First responder Give aid Interview."— Presentation transcript:

1 Collection Notes Ms. Engle Forensics Class

2 Crime Scenes and Evidence As a crime scene investigator: – After a crime: First responder Give aid Interview witnesses – Secure and protect the integrity of the crime scene – Prevent others from disturbing the evidence

3 Documentation Photography Notes Video Taping Sketches

4

5 Crime Scene Search Patterns Line method Strip method Grid method Wheel method Spiral method Zone method Link method

6 Patterns

7 When searching for evidence Look beyond the obvious Search methodology Search Pattern Record Evidence- Chain of Custody Preventing Contamination – SMID

8 Types of Evidence Various definitions: – ???Animal, mineral or vegetable??? Now: – Chemical, biological or microscopic

9 Types of Evidence Expert Evidence – In or out of court, opinions Testimonial Evidence – Interviews, statements, etc. Physical Evidence – Trace, blood, fibers

10 Evidence Protocols Important because: – Sets a standard – Leaves little room for error – Difficult to challenge

11 Collection of Physical Evidence Get the whole object Wet Let Dry!!!! Primary AND Secondary Survey – Fresh or rested eyes – 2 nd set of eyes – Scientific-ness

12 Reconstruction of Evidence How the act occurred base on evidence, not Skepticism Use the end result to look at the past Look at components: – Crime Scene & Evidence – Forensic Lab Tests – Logic and Reasoning – EXPERIENCE


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