Gil Carrillo first became a patrol officer for the LASD in 1971 and stayed in the police force until October 2009 when he retired after 38 years. During that time, Gil Carrillo was promoted to Lieutenant of the Los Angeles County Sheriff’s Homicide Bureau. Gil Carrillo investigated between 700-800 murders to include the "Nightstalker Serial Killer Richard Ramirez" and coincidentally, Carrillo’s badge number, 187, is the police radio code for murder in the US. Since retiring from the police force, Gil Carrillo has held lectures on his work and has spent much of his retirement traveling the world with his wife, Pearl.