The year is 1958. In a gothic mansion on a remote island off the coast of Southern California, a scrappy B-Movie crew is trying to finish their latest Drive-In schlock masterpiece. Desdemona Sunset, once a queen of the silent screen is now a shrewish and demanding diva whose once shining star is falling fast. She is making life miserable for the beleaguered film crew, who are just trying to make the best "haunted house on a deserted island alien invasion atomic satellite radiation mutation monster picture" they can make. But production grinds to a halt when Diva Desdemona is murdered, in the middle of a take with the cameras rolling, and it seems that everyone has the perfect alibi. Each other. Of course, Desdemona Sunset's final shot was no accident and suddenly the film's "police consultant", Detective Benjamin Booke is working the case of his career. If he survives the night. Because when the radio is destroyed and the crew can't get word to the mainland, they realize they are trapped in a gothic mansion with a killer, who just might do anything to get away with murder. Everyone is a suspect in this big cast mystery comedy that blends an Agatha Christie style who-done-it with a Roger Corman sci-fi creature feature that gives a whole new meaning to the terms, "Shoot!", "Cut!" and "Action!"