Two men on a fishing trip pick up a psychopathic fugitive with an intense hatred of humanity in this relentlessly suspenseful thriller directed by Ida Lupino and written by Daniel Mainwaring (Invasion of the Body Snatchers). Ray Collins (Edmund O'Brien) and Gilbert Bowen (Frank Lovejoy) are on their way to a relaxing weekend on the lake when they make the fateful mistake of giving a ride to Emmett Myers (William Tallman), a ruthless killer on the run from the cops. As a young child Myers was severely abused, and now he's determined to make the world suffer for the atrocities committed against him. An unrepentant sadist, Myers repeatedly uses his faulty eye (which is permanently open) to trick his two terrified victims into believing they have gained the upper hand in the tense stand-off, only to turn the tables on them at the last second. Inspired by the horrific crimes of real life mass murderer William Cook, who was eventually executed in San Quentin.