Matt Irvine worked as a Detective with the Glendale, California Police Department, investigating sex crimes and family violence before transferring to Robbery/Homicide. He moved to the San Francisco District Attorney Bureau of Investigations, assigned to public corruption investigations. Investigator Irvine reached the rank of Lieutenant, overseeing the Public Corruption Task Force (with the FBI) and the investigation of officer-involved incidents. After retiring from sworn service, he joined the Portland Police Bureau as a background investigator. He currently works as a cold case sex crimes investigator under the Sexual Assault Kit Initiative (SAKI) project. Investigator Irvine is a graduate of Columbia University, the Sherman Block Supervisory Leadership Institute, and the FBI National Academy. He was a teacher before becoming a cop, and has continued to teach officers from academy recruits to seasoned veterans at police academies, in-service trainings, and as an instructor in the premier law enforcement training organization Third Degree Communications, Inc.