In San Francisco, when several locals are found murdered in their closets, the rookie journalist Richard Clark (Donald Grant) is assigned to investigate the case. He stumbles upon the scientist Prof. Diane Bennett (Denise DuBarry) and her son “Professor” Bennett (Paul Walker) at the police station and befriends them. Soon they learn that a monster is responsible for the deaths and they team up with Diane´s chief Dr. Pennyworth (Henry Gibson) and Father Finnegan (Howard Duff) expecting to destroy the monster and save the world.

“Monster in the Closet” is a brainless classic trash-cult by Troma. The production follows the usual cheese Troma´s style and there are parodies to at least “The Exorcist”, “Close Encounters of the Third Kind”, “Alien”, “The War of the Worlds” and “The Howling” among other films. In addition, it is funny to see the debut of Paul Walker and an early work of Fergie and the cameo of John Carradine.