Steps of CSI

In the 7 steps of crime scene investigation, ​ (a)   must be done 1st; ​ (b)   must be done 2nd; ​ (c)   must be done 3rd; and ​ (d)   must be done last. All the other steps can happen simulatenously between the 3rd and last steps.

• Secure the Scene
• Separate the Witnesses
• Scan the Scene
• Secure & Collect Evidence
• See the Scene
• Sketch the Scene
• Search the Scene

What is the correct order of steps in securing a crime scene?

• Restrict access to the area in order to preserve & isolate the scene

• Create a security log documenting everyone who enters & leaves the scene

• Identify possible victims, witnesses & suspects

• Check and ensure the safety of individuals at the scene

Why is it important to separate witnesses at a crime scene? (You may pick more than one, if appropriate)

• To prevent unintentional memory persuasion

• To prevent collusion

• To establish the location of the witness at the time of the crime

• To determine what the witness saw or heard

What option(s) below are good things to say to witnesses at a scene? (You may pick more than 1, if appropriate)

• Asking yes or no questions

• Asking open-ended questions

• Giving witnesses feedback on their answers

• Asking them where they were at the time of the crime

What is NOT done during the 3rd step, Scanning the Scene? (You may pick more than 1, if appropriate)

• Taking photos of the scene & evidence

• Determining what locations should be photographed

• Determine location of primary and/or secondary crime scenes

• Taking measurements of scene & evidence locations

Which statements about primary and secondary crime scenes are true? (You may pick more than one, if appropriate)

• A primary crime scene is where the crime took place

• A primary crime scene is associated with the crime but not where it actually took place

• A secondary crime scene is the location where the crime took place

• A secondary crime scene is associated with the crime but not where it actually took place

What is the purpose of taking photographs at a crime scene?

• To create legal documents that cannot be altered or staged

• To capture the scene before anything is moved

• To provide multiple angles and perspectives

• All of the above

When photographing evidence, what is NOT true?

• Most photos should be taken at 90 degrees (looking straight down)

• Photos should be taken before anything is moved

• Photos should be taken at close range only

• Evidence should be photographed with and without a ruler in the photo

What does NOT need to be included in a rough sketch of a crime scene?

• Accurate measurements of relevant objects (taken from 2 immovable objects)

• Legend with officer's information, date, and case number

• All objects drawn to scale

• North compass direction

• Location of the body (if there is one) and all evidence

Which search pattern can be used by a single investigator to ensure thorough coverage of the crime scene? (You may choose more than one, if appropriate)

• Line/Strip

• Spiral

• Quadrant/Zone

• Grid