Scientific Crime Scene Investigation MTMiller Basic Concepts n

Scientific Crime Scene Investigation MTMiller

Basic Concepts n n Discovery process that is methodical & systematic Works for all scenes

An Integrated Sequential Process A scientific crime scene investigation process: • First Responders • Scene Security • Preliminary Scene Survey • Documentation • Scene Search • Evidence Collection • Final Scene Survey • Reconstruction

First Responders Assist victim n Search/detain suspects n Witnesses n Crime scene security n Valuable asset n m m Co n o i t a c i un

Crime Scene Security M l e v e L ulti- ch a o r App

“Crime Scene Processing” Preliminary scene survey n Documentation n Scene search n Evidence collection, packaging, and collection n Final scene survey n

Preliminary Scene Survey “Walk-Thru” (with 1 st) n Evidence present: n Transient Conditional Trace n Team effort Duties Specialties

Documentation n Notes Written n Videography Orientation Still Photography n Sketching n

Searching, Visualization, Enhancement POEs and Paths of Travel n Geometric patterns n Obvious and less obvious n Re-document?

What’s wrong here?

Evidence Collection & Packaging Universal precautions n Whole object n Wet…let dry! n Primary & secondary n M. S. I. D. D. n

Final Scene Survey Fresh or rested eyes n Second set of eyes n Scientific-ness n

Reconstruction How the criminal act occurred… n Using the end result to look to the past. n Components: n Crime scene and its evidence Forensic laboratory tests Logic/reasoning Experience

Final Thoughts…. n Who are the crime scene investigators? • Education & Training • Certification n Forensic science & CSI?