2. THE CRIME SCENE

3.  “Never touch, change, or alter anything until it has been documented, identified, measured, and photographed … when a body or article has been moved, it can never be restored to its original position”

4. 3  As automobiles run on gasoline, crime laboratories “run” on physical evidence.  Physical evidence encompasses any and all objects that can establish that a crime has been committed or can provide a link between a crime and its victim or a crime and its perpetrator.  But if physical evidence is to be used effectively for aiding the investigator, its presence first must be recognized at the crime scene.

5.  THE CRIME SCENE  THE SUSPECT  THE VICTIM “Physical evidence can’t lie, quit, forget or get fired.”

6.  BEFORE AN OBJECT CAN BECOME EVIDENCE, IT MUST BE RECOGNIZED BY THE INVESTIGATOR AS HAVING A RELATIONSHIP TO THE CRIME COMMITTED

7.  ADMINISTER FIRST AID  ARREST PERPETRATOR  REQUEST AID  DETAIN AND IDENTIFY WITNESSES  SAFEGUARD CRIME SCENE

8.  DETERMINE CRIME SCENE AREA  EXCLUDE ALL PERSONS  BLOCK OFF BOUNDARIES  IDENTIFY AND SEGREGATE WITNESSES  NOTE DETAILS FOR LATER  AVOID UNNECESSARY WALKING ABOUT  DON’T TOUCH ANYTHING  PROVIDE INFORMATION TO INVESTIGATORS

9.  Photography  Sketching  Notes