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The working title for the film was Khorda. Although the film opened in Los Angeles in February 1973, Filmfacts noted that the picture opened in Chicago the week of September 14, 1972 and, according to a April 19, 1972 Hollywood Reporter article, American International Pictures acquired the film that month to release it in August 1972. A copyright statement appears on the film, but Deathmaster was not registered for copyright at the time of its release. However, World Entertainment Productions registered the film on May 18, 1978 under the number PA-9-065.
Although Bill Ewing's onscreen credit reads "Introducing," he had previously appeared in the 1972 film The Hoax, which was produced in 1971, before Deathmaster. According to actor Robert Quarry's commentary on the DVD release of The Deathmaster, the picture was shot on location in Topanga Canyon and at a mansion in the Los Feliz section of Los Angeles. Quarry also confirmed that the film was released in 1972 after American International purchased the film. Television actress Brenda Dickson made her feature film debut in Deathmaster.