The Gray Line, The Story Behind The Blue Line, is a law enforcement podcast discussing numerous topics. The podcast has four hosts. Benny Cruz, a retired San Diego Sheriff's Detective; David Contreras, a retired San Diego Police Detective Sergeant; Sean Murphy, a retired San Diego Police Lieutenant; and Gonzalo "Chalo" Gerardo, retired Calexico Police Chief. The podcast goes live every Tuesday at 6 pm (PST). All the episodes start with an introductory video and song. The panel interviews many individuals, such as Prison Wardens, Alex Marentes, Buggs of Borderland Beat, Parole Agents, Hector Bravo of That Guard Podcast, Los Angeles County Sheriff Alex Villanueva, DEA agents, former LAPD Rampart Officer Ruben Palomares, and Jay Flores, one of the Chicago Twins that brought down Joaquin "El Chapo" Guzman from the Sinaloa Cartel, and many other guests. You can watch the video podcast on YouTube by going to their YouTube Channel.

In this episode, we will hear from co-host David Contreras. He will discuss his Life and career with the San Diego Police Department. We will listen to his life story and career with the California Department of Corrections and the San Diego Police Department. He will discuss criminal cases, prison gangs, EME members, and international criminal cases he worked on.