Marks and Impression Specialist
by Ryan Michaud
The term impression evidence in crime scene investigation refers to marks, prints or any form left on a surface such as (soil, cement, wood, or metal) of the crime scene that can be used as evidence. Impression evidence is formed when one object is pressed against another material. The most common types of impression evidence found in the crime scene are footprints, tire tracks, bite marks and tool marks. These types of impression evidence can be used by crime scene investigators to link the suspects to the crime.
Mike Byrd (1955-2005) joined the Miami-Dade County Police Department in 1983 and started with the Crime Scene Investigations Bureau in 1987.