Serial Killers Apprentice

Dr. Katherine Ramsland interviews Elmer Wayne Henley, the sole survivor of the 1973 Houston Mass Murders, to unravel his chilling journey from manipulated teen to convicted killer—and the terrifying truth behind the line between victim and predator.

Serial Killers Apprentice

8/17 9-11PM ET/PT on Discovery ID

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Criminologist Dr. Katherine Ramsland delves into one of the darkest chapters in American crime history—an unthinkable killing spree that echoes into today.

In 1973, before the term “serial killer” had even entered the public lexicon, the authorities were led to a staggering horror in southern Texas: the tortured remains of twenty-seven teenage boys buried across three locations. Their disappearances had gone unnoticed for years… until the disturbing truth surfaced.

At the center of the carnage was 17-year-old Elmer Wayne Henley, manipulated by 33-year-old serial killer Dean Corll, into becoming his willing accomplice in abduction and murder.

Now, for the first time in decades, Henley, only surviving accomplice, breaks his silence. In an exclusive, chilling interview with criminologist Dr. Katherine Ramsland, he reveals the inner workings of Corll’s twisted world—one of manipulation, violence, and psychological control. His firsthand account opens a chilling window into a nightmare that changed the world.

This is more than a true crime story. This is a look into the mind of a serial killer’s apprentice.