Forensics but cool

What is the Chain of Custody?

Essential documentation that records all individuals who have come in contact with evidence, ensuring accountability and integrity.

Who must be the first listed on the Chain of Custody?

The first person to collect and seal the evidence.

What does Locard's Exchange Principle state?

Whenever two entities come into contact, a transfer of evidence occurs, meaning criminals leave traces behind.

What are the primary responsibilities of first responders at a crime scene?

Securing the scene, ensuring safety, and preserving evidence integrity.

What is the difference between a primary and secondary crime scene?

A primary scene is where the actual crime occurred, while a secondary scene is where additional evidence is found.

What is trace evidence?

Very small evidence collected in a paper bindle, such as hair, fibers, and soil.

What are the Seven Steps of Crime Scene Investigation?

Secure the Scene, Separate the Witnesses, Scan the Scene, See the Scene, Document, Collect Evidence, and Maintain Chain of Custody.

Why is crime scene photography important?

It preserves the integrity of the scene, documenting its true condition for investigation.

What should be included in detailed notes accompanying crime scene photographs?

Information on who took the photo, the angle, distance, date, time, and a description of the scene.

What are the three main types of crime scene sketches?

Bird's Eye View, Elevated View, and Exploded View.

What is the purpose of a rough sketch?

To depict essential details like windows, doors, and evidence locations, not drawn to scale.

What must each sketch include?

The name of the sketcher, date, time, true North, and a key/legend for evidence.

What is a critical step in evidence collection?

Careful handling to maintain integrity and prevent contamination.

How should biological evidence be packaged?

It must be dried before packaging, using breathable materials.

What is the significance of the chain of custody?

It must be established and maintained; any break can render evidence inadmissible in court.

What is required for sealing evidence?

Evidence must be sealed with evidence tape, and the collector's signature should be on the tape.

What is the role of medical examiners/coroners at crime scenes?

To determine cause of death and assist in evidence collection.

What ethical considerations must be followed in evidence handling?

Maintaining the integrity of evidence to uphold justice and avoid wrongful convictions.

What is the Fourth Amendment?

It protects citizens against unreasonable searches and seizures, requiring probable cause for warrants.

What should be done if new evidence is discovered during photography?

It must be marked, photographed, and documented.

What is the importance of oblique lighting in crime scene photography?

It enhances visibility of difficult-to-see evidence, creating shadows that reveal details.

What must be done with control evidence?

It must be collected from known sources to establish a baseline for comparison.

What is the purpose of final sketches?

To provide a polished version used in legal proceedings, drawn to scale.

What common errors can occur in crime scene investigation?

Failure to follow the 7S's can lead to compromised evidence and contamination.

What is the role of detectives at crime scenes?

To conduct interviews and gather information from witnesses and suspects.

What is the significance of crime scene sketches?

They depict the layout and relationship of evidence to the surroundings.