ID's The Serial Killer’s Apprentice focuses on the murders committed by Dean Corll as recalled by his accomplice, Elmer Wayne Henley Jr.

Elmer Wayne Henley Jr. is speaking out in a new Investigation Discovery documentary titled The Serial Killer's Apprentice.

Elmer Wayne Henley Jr., an accomplice to Texas serial killer Dean Corll, is speaking out for the first time in 50 years in a ...