1. YOYO
A detective who was mere days away from cracking an international oil smuggling ring has suddenly gone missing. While inspecting his last-known location, officers find a note: Currently there are 3 suspects: Bill, John, and Todd. Can you break the detective’s code and find the criminal's name?

2. YOYO
A detective who was mere days away from cracking an international oil smuggling ring has suddenly gone missing. While inspecting his last-known location, officers find a note: Currently there are 3 suspects: Bill, John, and Todd. Can you break the detective’s code and find the criminal's name?
Bill is the suspect, if read upside down the numbers read "Bill is boss. He sells oil."

3. Aim: What are the basics of crime scene investigation?
Scanlon/Mammolito

4. Crime Scene Vocabulary – The Scene
Crime Scene – any physical location in which a crime has occurred or is suspected of having occurred
Primary Crime Scene – the original location of a crime or accident
Secondary Crime Scene – an alternate location where additional evidence may be found

5. Types of Evidence
Testimonial Evidence that includes oral or written statements given to police as well as court testimony by people who witnessed an event
Physical
Evidence that refers to any material items that would be present at a crime scene, on the victims, or found in a suspect’s possession
Trace Evidence
Evidence that refers to physical evidence that is found in small but measurable amount, such as strands of hair, fibers, or skin cells

6. Why is evidence important?
May prove that a crime has been committed
Establish key elements of a crime
Link a suspect with a crime scene or a victim
Establish the identity of a victim or suspect
Corroborate verbal witness testimony
Exonerate the innocent
Give detective leads to work with in the case

7. Crime Scene Protocol
Step 1: Secure the Scene In order to preserve the crime scene and minimize chances of contamination, the scene of the crime must be contained at taped off. – The first responding police officer has this task. Think: Is it better to section off an area that exceeds the scene of the crime, or one that fits perfectly around the evidence you see right away? Why?

8. Crime Scene Protocol
Step 2 – Interview As a crime scene investigator, your first job is to interview the first responding police officer at the scene, or the victim to determine what allegedly happened, what crime took place, and how was the crime committed. This information may not be factual information but it will give the investigators a place to start.

9. Crime Scene Protocol
Step 3: Examine In this step of the crime scene protocol you are actually examining the scene of the crime. This will help identify possible evidence, identify the point of entry and point of exit, and outline the general layout of the crime scene.

10. Crime Scene Protocol
Step 4: Document This step involves creating a pictorial record of the scene as well as a rough sketch to demonstrate the layout of the crime scene and to identify the exact position of the deceased victim or other evidence within the crime scene

11. Crime Scene Protocol
Step 5: Process In this step, the crime scene technicians will process the crime scene for evidence, both physical and testimonial evidence. It is the crime scene technicians responsibility to identify, evaluate, and collect physical evidence from the crime scene for further analysis by a crime laboratory.

12. Investigating the Evidence
The Forensic Science disciplines at the Illinois State Police Crime Labs
Drug Chemistry
Trace Chemistry
Microscopy
Biology/DNA
Toxicology
Latent Prints
Ballistics (Firearms)
Toolmarks
Questioned Documents

13. Our Classroom Crime Scene
Using the information gained in today’s lesson, examine the classroom crime scene as if you were an actual crime scene investigator.