The Anatomy of a Crime Scene

U NUT CROSS///CRIME SCENE POLICE LINE DO NOT CROSS CRIME SO Cutting Through The Police Tape:ng THE ANATOMY OF A CRIME SCENE POLICE LINE DO NOT CROSS CRIME SCENE POLICE LINE DO NOT CR thanks OCOLD JUSTICE 200.000 TNT 71716 ke sene pimsic tha ill begin to liak to pieces in this case. ewed search, authori: reward for any inforo mtification and arvest onsible for Davis ped up invess re to the far There are over REU unsolved murder cases. Two experts change everything. FIMD It's more than a show. tantr It's a missionc mincr OSS CRIME SCENE POLICE LINE DO NOT CROSS CRIME SCENEP THE EXPERTS: Sttothat so Nink PD cas e ret uth LEGAL EXPERT 2,00 y in Kelly Siegler CRIME SCENE EXPERT neid Yolanda McClary d arres One of the fiercest prosecutors in the country. 20 Years on the Las Vegas Metropolitan Vis' Has tried 68 murder cases and has never lost. Police Department. e rar gation ried 20 capital murder Has cased over 7,000 crime scenes. cios The primary inspiration for Marg Helenberger's character on ily. "CSI: Crime Scene Investigation" death penalty cases and secured the death penalty in 19 of those trials, earning her the nickname "Giant Killer." POLICE LINE DO NOT CROSS CRIME SCENE POLICE LINE DO NOT CR TACKLING A COLD CASE DO NOT CROSS CRIME SCENE POLICE LINE DO NOT CROSS/ CRIME S MAKING SENSE OF EVIDENCE Direct Evidence: Eyewitness accounts or dashboard video cameras. Circumstantial Evidence: Indirect evidence that does not prove facts, but implies them (seen usually by nobody but the victim and the suspect) Snapping the Scene: Forensic Photogrammetry is the process of taking measurements from photographic images to document a scene. Provides multiple views (Phototriangulation) Biological Evidence (more persuasive in court) Computer techniques are then used to measure the objects' relative distances (often used in car collisions) Body fluids Hair Physical Evidence (Reduces the number of suspects to a smaller group of individuals) Plant parts Natural fibers Fingerprints Shoe prints Fibers Bullets POLICE LINE DO NOT CROSS CRIME SCENE POLICE LINE DO NOT C CLOSING THE B0OK -Crime Scene Snags KS: "It varies with every murder that happens. A Homicide cop would probably say they work a case until all possible leads are exhausted and then some and only put it aside when there are no leads left to work." YM: KS: Degradation/ contamination of Reluctant witnesses who are either unable or evidence afraid to tell all| that they know. Most Damning Evidence in Court? From Crime to Conviction The Essentials 1. Latent print identification 2. DNA profile identification YM: Ideally... Electronic data that can place a possible suspect at the scene or establish a relationship between the suspect and victim YM: KS: 1. Latent print identification 2. DNA profile identification CREDIBLE witnesses 3. Reliable witnesses 4. Confession NEW REAL LIFE CRIME SERIES PREMIERES TUESDAY SEPT. 3 10/9c TNT e ne COLD JUSTICE coldjustice.com Sources: Howstuffworks, Inc., http://science.howstuffworks.com/csi3.htm, http://www.cengagesites.com/academic/assets/sites/4827/bertino_chapter2.pdf