The Serial Killer's Apprentice

About The Serial Killer's Apprentice

The documentary explores the story of Elmer Wayne Henley Jr., an accomplice to the infamous Houston serial killer, Dean Corll, also known as "The Candyman Killer."

Investigation Discovery's The Serial Killer's Apprentice is a documentary series. It has run to one season of one episode since August 2025.

American members can watch it on Investigation Discovery.

It carries a TV-14 rating.