2_Scene_on-3

2_Scene_on-3 - Evidence at the Scene Hidden Evidence –...

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Unformatted text preview: Evidence at the Scene Hidden Evidence – Chapter Two Crime Scene First step in any forensic investigation is at the crime scene • Initially identify: – Nature of the crime – Cause of death for any victims – What type of evidence is present • Protecting the site from change • Begin collection of evidence Two Overall Purposes 1. Establish what happened • Crime scene reconstruction • Document the conditions at the scene • Recognize what might be physical evidence • Carefully note and collect all evidence 2. Identify the responsible person(s) • Generate many possible theories • Eliminate theories that do not fit with evidence Initial Responder • Usually a police officer is the first professional to the scene • Before Forensics can begin: – Check any bodies for signs of life – Call emergency services if needed – Protect the scene from changes – Close off the scene – Document the crime scene – Call in the forensics experts Investigation Begins Search immediate site: • Mark exact position of anything that may pertain to the case • Carefully note the condition of any bodies • Mark and note exactly where the body is in relation to any other evidence • Photographs or video is taken of the scene • All of this allows crime scene Investigation Spreads • Painstaking work – be sure all evidence is: – L ocated – I dentified – C ollected – R ecorded • Search spreads beyond initial site in a systematic way • Be sure the entire area is covered carefully Lindbergh Baby • Charles Lindbergh – first man to fly across Atlantic; New York to Paris • Infant son was kidnapped from their New Jersey home - 1932 • Evidence at crime scene: – Homemade ladder – Chisel – Muddy footprints – Ransom letter Case Four Lindbergh Baby • Man with thick German accent took the ransom and told where to find the baby • Baby was not there • Found dead body two months later in woods near Lindbergh’s home – Most likely killed on night of kidnapping • If crime search had extended into those woods Lindberghs might have found their son immediately Case Four Lindbergh Baby • Wood to make ladder was tracked down • Only one mill in South Carolina made same type of wood • Their planing machine produced marks that matched wood in ladder exactly • Wood was delivered to Bronx site – Only site in Northeast • Meanwhile also tracked down German born men with unexplained money Case Four Lindbergh Baby • Found such a man living in the Bronx • Bruno Richard Hauptmann • Search of his apartment produced 14,000 dollars of the ransom money • Piece of wood missing from Hauptmann’s attic matched ladder perfectly • Also, Hauptmann’s own planing machine matched marks on ladder perfectly • Found guilty, sent to electric chair Case Four Possible Evidence What sorts of evidence can you think of?...
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This note was uploaded on 05/05/2011 for the course BIO 056 taught by Professor Yonan during the Spring '11 term at Vermont.

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2_Scene_on-3 - Evidence at the Scene Hidden Evidence –...

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