A&E True Crime speaks with author Alan Feuer about how a sophisticated, encrypted cell-phone system and a young technology specialist led to El Chapo's capture.

Working as an informant for the FBI is dangerous, undercover work. Hear from writer Jeanette Hurt on how her dad, an unexpected FBI informant, helped expose corruption at the Chicago Truck Drivers, Helpers and Warehouse Workers Union.

Sgt. Sean "Sticks" Larkin from Live PD and Live PD Presents: PD Cam talks about the funniest things he's seen caught on camera, whether civilians can request footage from private businesses and the use of surveillance by the Tulsa police.

James Atkinson, who has spent decades designing and installing listening devices for the FBI, CIA and other agencies, tells A&E True Crime about some of the dangerous undercover work he's done and unusual things he's bugged.