Dean Corll killed at least 27 boys in the early 1970s, but he had help. ID's The Serial Killer's Apprentice digs into how—and ...

The new documentary "The Serial Killer's Apprentice" follows Dr. Ramsland who dives into the mind and memory of Elmer Henley ...

Renowned forensic psychologist Dr. Katherine Ramsland spoke to PEOPLE about the mindset of Elmer Wayne Henley Jr., an ...

The Serial Killer's Apprentice,' airing Sunday, dives into the relationship between evil mastermind Dean Corll and one of the ...

After pleading not guilty, Henley was convicted in 1974 of murdering six boys, per The New York Times, and was given six ...

A new two-hour documentary, The Serial Killer’s Apprentice, is coming to Investigation Discovery. It focuses on the crimes of ...

A new Investigation Discovery documentary, The Serial Killer’s Apprentice, centers on recorded conversations between Elmer ...

A man who helped lure victims for the notorious Candy Man killer back in the 1970s is speaking out on a new doc for the first ...

New documentary from Investigation Discovery, “The Serial Killer’s Apprentice” premieres Aug. 17th. The documentary is inspired by the book The Serial Killer’s Apprentice which ...

Bryan Kohberger's criminology professor has said she is 'horrified' that one of her former students went on a stabbing rampage that shocked the nation.

Elmer Wayne Henley breaks decades of silence in a new documentary exploring Dean Corll’s horrific Houston Mass Murders and his own role.