Trace Evidence is very important because it solves crimes. If you can identify a series of events that lead to the main outcome you can then solve the crime. Trace evidence may not be enough to prosecute a person but with gathered evidence and time frames you can possibly finger the suspect.
Let’s say for instance a person decides to rob a bank in Manhattan New York. They drive up in an old beat up 1991 Chevy Lumina Sky blue station wagon. Then the first guy gets out, he has a Freddy Cougar mask on and runs in the bank with only a pillow case, a black 9 mm hand gun, large shads and black clothing . He goes in with the other four waiting at the vehicle outside and gets the money from the first checker next to the door, the alarm goes off the robber gets trapped the others waiting outside pull their vehicle through the front door glass backwards the robber runs and gets in the vehicle and takes off. The police get there and find that the criminal that got stuck left his mask and his left shoe at the crime scene.
Here you have a series of events that you could possibly find evidence.
1st piece of evidence are the parts from the vehicle that were left behind
2nd piece of evidence are the motion cameras
3rd piece of evidence is the Freddy Cougar mask
4th piece of evidence is the left shoe you could DNA from the shoe, size of shoe
My point is that with the given trace evidence you may be able to find the suspect.
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