The Devil's Rain is a 1975 low-budget horror film, directed by Robert Fuest. It was one of several B-films in which William Shatner starred between the original Star Trek television series and Star Trek: The Motion Picture. Other cast members included Tom Skerritt, Ernest Borgnine, Eddie Albert, Ida Lupino, Keenan Wynn and John Travolta in his film debut in a minor role. Satanist Anton LaVey is credited as the film's technical advisor and appeared in the film playing a minor role.
In his 2010 book Showgirls, Teen Wolves, and Astro Zombies, Australian film reviewer Michael Adams ironically called The Devil's Rain "the ultimate cult movie": "It's about a cult, has a cult following, was devised with input from a cult leader, and saw a future superstar (John Travolta) indoctrinated into a cult he'd help popularize."