The Undead is a 1957 horror film directed by Roger Corman and starring Pamela Duncan, Allison Hayes, Richard Garland and Val Dufour. It also featured Corman regulars Richard Devon, Dick Miller, Mel Welles and Bruno VeSota. The authors' original working title was The Trance of Diana Love. The film follows the story of a prostitute, Diana Love (Duncan), who is put into a hypnotic trance by psychic Quintus (Dufour), thus causing her to regress to a previous life. Hayes later starred in Attack of the 50 Foot Woman (1958). The film was released on March 15, 1957 by American International Pictures as a double feature with Voodoo Woman.

Roger William Corman was an American film director, producer, and actor. Known under various monikers such as "The Pope of Pop Cinema", "The Spiritual Godfather of the New Hollywood", and "The King of Cult", he was known as a trailblazer in the world of independent film. Many of Corman's films were low-budget cult films,