Cristina was right when she noticed Jordan suffering from the CSI effect—the belief that forensic science produces quick results able to solve most crimes. She has found that many people have similar misunderstandings about crime labs from watching television. Obviously, not all crimes are neatly solved in an hour as they are on TV. Now is your chance to play all of the parts in a crime-solving forensics TV show, from choosing which evidence to test to deciding what should be presented in court.
Read the scenario, then answer the questions that follow.
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Scenario
You arrive at a crime scene where there has been an armed robbery. It is a corner convenience store in a quiet part of town, next to the movie theater and across the street from the bank.
Right away, you notice that there is a small amount of blood on the floor next to a broken bottle. But as far as you know, none of the witnesses or victims of the robbery were injured. You also notice a partial bloody handprint on the inside of the door.
The police have told you there were five people in the store when it was robbed. Two were at the back by the milk cooler, one was in the aisle farthest from the door, one was in the restroom, and the cashier was behind the front counter. Witness statements from all of them are being taken. The two people by the milk cooler also had their phones taken by the burglar because he saw them taking his picture.
The video surveillance is very fuzzy. You watch the burglar come in and smash a bottle that he waves around and threaten the patrons with. He then leans on the counter and grabs the cash out of the register. You see him notice the two people hiding by the milk cooler taking his photo with their phones. The burglar runs at them, yelling and waving the jagged glass. He grabs their phones and pushes open the door, leaving a big hand print on the door as he makes his escape. The video then shows a woman coming into the store from the back where the restrooms are located.
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Here is a list of all sorts of things you might come across at a crime scene in a small convenience store. You decide which evidence needs to be considered further before you release the crime scene.
1. the broken bottle
2. video surveillance from the store
3. the phones of the cashier and the other witness
4. video surveillance from the movie theater lobby
5. a blood sample from the floor and the door
6. a set of keys in the far aisle
7. DVDs on the floor next to a spinner display
8. fingerprints lifted from the inside of the door
9. the chair the cashier sits on behind the counter
10. fingerprints lifted from the milk cooler
11. video surveillance from the ATM at the bank across the street
12. the chocolate bar on the floor near the milk cooler
13. the phone of the person in the restroom
14. fingerprints on the front counter
15. access to the cloud account or “track my phone” app on the two stolen phones
16. a knife found on the floor near the back of the store
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Questions to answer about the scenario:
- Which evidence do you want to send to the crime lab?
- What test(s) would you like to have run on the evidence you selected?
- Why do you believe this evidence might help a prosecutor make their case in court?
To help you draft your response, make a table in your notes (such as the one below) to first organize your ideas.
Then, explain your reasoning for each item of evidence you believe should be sent to the crime lab. You will be graded on how well your answers are worded, and how many pieces of evidence you correctly identify tests for.