Behind the Screams

The real stories behind iconic horror movies are detailed in this series, beginning with the inspiration for "Psycho" and "The Silence of the Lambs": Ed Gein, a deranged killer from rural Wisconsin who admitted to murdering two women and stealing bodies from area graveyards.

A profile of serial killer Ted Bundy, who was executed in Florida on Jan. 24, 1989.

The story of serial killer John Wayne Gacy, who killed at least 33 young men and boys between 1972 and 1978, and buried many of the bodies in the crawl space beneath his suburban Chicago house. He was executed on May 10, 1994.

The true story that inspired "The Exorcist" is related.

The story that inspired "The Conjuring," about a family that moved into a Rhode Island farmhouse that was allegedly haunted.

The incident that inspired the movie "The Fire in the Sky," about an Arizona man abducted by aliens, is detailed.