Crime Scene Investigation Terminology

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Crime Scene Tech (CSI)

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The professional responsible for gathering evidence at a crime scene, including photographs and physical evidence.

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Forensic Scientist

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A specialist who works in a laboratory analyzing evidence collected from crime scenes.

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Oblique Lighting

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A technique used in photography to enhance the visibility of certain types of impressions, particularly useful for capturing details in footprints and tire tracks.

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Class Evidence

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Evidence that can be associated with a group of items rather than a single source, such as fibers or paint.

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Transient Evidence

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Temporary evidence that is easily changed or lost, such as odors, footprints, or tire marks.

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First Officer

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The first law enforcement officer to arrive at a crime scene, responsible for securing the scene and ensuring safety.

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Medical Examiner

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A licensed physician who investigates deaths, particularly those that are sudden, unexplained, or violent.

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Physical Evidence

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Any tangible item that can establish that a crime has been committed or can link a suspect to a crime.

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Photographic Evidence

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Images captured at a crime scene that can provide visual documentation of the scene and evidence.

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Chain of Custody

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The process of maintaining and documenting the handling of evidence to ensure its integrity and admissibility in court.