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Trace Evidence

Published on Nov 18, 2015

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PRESENTATION OUTLINE

TRACE EVIDENCE

JONATHAN BLACK

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  • I believe this to be a lock box key.
  • To learn more about this, I would contact a locksmith.
  • This could potentially be very valuable evidence as a locksmith might be able to tell you what banks use this type of key.
  • Type of key. This means that you might be able to link it to someone's lockbox, giving you a name.

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  • To me, this appears to be sand.
  • To find out more about this, you would see a geologist, who might be able to ID it.
  • This might link it to a specific area, which is useful because it can tell you where
  • your victim has been, or that it came from someone else who went in that sand. This is weak evidence however,
  • because while it can link someone to the scene, a lot of people might have walked through this sand.

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  • This appears to be a twisty tie, like those on bread bags.
  • To find out more about this, I would ask any nearby factories that make them who they sell them to.
  • After this, you could check the employees for a connection, and then check the stores that the ties were sold to
  • to see who bought them.
  • This isn't all that useful however, as a lot of people buy packaged items. At most it further indicates someone.

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  • This appears to be gum
  • To find out more, I'd take it to the lab for DNA analysis, as there's no way chewed gum doesn't have DNA.
  • This is very, very useful because it can give you a DNA profile from the scene to compare to any suspects.
  • If there aren't any matches it becomes less useful, as you'll have to travel up the supply chain and check
  • employees involved in its manufacture and anyone who bought it.

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  • This appears to be a piece of colored pencil tip.
  • To find out more about this, I would take it to the lab to have it identified.
  • After that, I'd take it to the factory that produces it and figure out where they sell it to.
  • I'd then check employees of the factory for connections to the Vic, and then see what connection buyers might
  • have to the retail store. This is a little useful, but at most it could only weakly link a suspect to the scene.

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  • To find out more about this copper wire, I would visit suppliers of this and figure out who their customers are.
  • After this, I would check to see which of the companies who bought it were in or near the area.
  • After that, I would check to see what connection the employees of companies with work nearby exists w/ Vic.
  • This is useful because copper wire is semi-rare, meaning there's little reason it would be at the scene except
  • that one of the employees of the companies (particularly electrician or construction) was near the victim.

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  • This appears to be a nail with dirt trapped under it.
  • Assuming you can't get DNA from the nail, the next best thing to do word be to visit a geologist.
  • The geologist might be able to ID the dirt under the nail and link it to a particular area.
  • This could tell you what area to search for suspects in, or link an existing one who's been there to the crime.
  • This isn't super useful, as there's a chance that many people walked through an area containing this dirt.

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  • This appears, to me, to be a blonde hair.
  • Since this is trace evidence, it's safe to assumes that it has no follicle.
  • To learn more about its would take it to a mDNA analysis specialist for processing.
  • While this won't give us an exact genetic match, it will enable us to strongly link a suspect to it.
  • This is useful, but since mDNA is inherited from the mother, it complicates matters if other family is suspected.

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  • This appears to be a burned and carved piece of bone.
  • I would take it to an Orthopedic Specialist for ID, then any artisans who work with those bones.
  • After that you could identify where the bone came from and who bought whatever this came from.
  • This seems like it would be a very useful piece of evidence, as bone jewelry doesn't seem common.
  • It could also link someone you already suspect to the crime scene further.

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  • This is a used match.
  • I believe that the best thing to do would be to take this to the lab to have it checked for accelerants.
  • If you find any, you could check stores in the area to see who bought it, changing your pool of suspects.
  • If there wasn't any, then you might find something, maybe tobacco residue, that links to a brand, and a buyer.
  • The main problem with this is that matches are mass produced, very commonplace, and this is heavily burned.

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  • This appears to be a peach pit.
  • The first thing I'd do would be to take it to the lab for DNA analysis, as it likely has some on it from being bit.
  • The second thing I'd do would be to take it to a fruit market and determine what type of peach it came from.
  • This would enable me to figure out what markets sell this peach, and get a list of buyers, aka SUSPECTS.
  • This isn't very useful without DNA on it; there's many reasons it could be at the scene, and many who buy 'em.

IM BRUCEMAN, I MEAN BAT WAYNE... ****

  • This appears to be residue from a red velvet cupcake/cake.
  • The first thing to do would be to take it to the lab to confirm its diabolical origins in the underground bakery.
  • After that, I would have to go on a hunt through local branches of this nefarious ring and crack some heads.
  • This will eventually give me list of recent buyers, and vengeance for the cake bosses' murder of my parents.
  • This list could then be compared to my punching bags- err, suspects, and maybe confirm who was there.

This is a wood shaving. Im a detective, not a lumber jack.

  • This appears to be a sliver of wood.
  • The first thing to do would be to take it to the lab and determine what kind of wood.
  • After that, I would visit local distributors of this and see if any of their customers matched my suspects.
  • This is some pretty unreliable evidence though, as there's a number of ways it could be on scene, and
  • a large number of sources for this wood chip asides from suppliers, like the forest.

I HAVE NO IDEA WHAT THIS IS. ALSO, INDIANA JONES IA A BOSS.

  • Hmm, yes, this appears to be an early -16th millennium Ethiopian nose picker.
  • The best thing to do here is to take it to a museum or eccentric college professor for identification.
  • The next best thing to do is determine who would be interested in this priceless object. Perhaps ex-nazis.
  • Out of the list of private collectors who would likely be interested, I could check to see which knew my victim.
  • However, despite perhaps gaining a new group of suspects to consider, I don't see this as being any help.

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  • This is a button.
  • A BUTTON
  • A clear, plastic, thread-less button
  • No self respecting investigator would use this as a basis for an arrest. Quickly, arrest all the seamstresses!
  • Short of it having DNA, or a suspect missing a button like it on a shirt, this is no help. At all. It's too common.

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