In the prologue, author R. Chetwynd-Hayes (John Carradine) runs into a strange man on the street who turns out to be a starving vampire named Eramus (Vincent Price). He bites the writer and takes him to the Monster Club, a covert gathering place for supernatural beings. In between the club’s strange music and dance performances, Eramus tells the author three stories about the creatures of the night.
In “The Shadmock”, Angela (Barbara Kellerman), needing money, takes a job at a secluded manor owned by Raven (James Laurenson), who is a Shadmock—a hybrid creature leading a tragic existence. Shadmocks are known for their demonic whistle. Angela becomes his friend and he eventually proposes marriage. She is frightened and refuses, but her domineering boyfriend George (Simon Ward) urges her to marry Raven for his money. During the engagement party, she is caught robbing the safe and screams that she could never love him. Saddened, Raven whistles and destroys Angel’s face. Seeing her, George loses his mind.
In “The Vampires”, the timid son (Warren Saire) of a quiet family, lives a lonely life, bullied at school and neglected by his father, Mr. Busotsky, (Richard Johnson), only to learn that the family are vampires and relentlessly hunted by a team of vampire-hunters, known as the B-Squad and led by Pickering (Donald Pleasance). They break into the house and stake the boy’s father, but the father bites Pickering. He is now pursued by his own squad and staked. After the team takes Pickering away, the boy and his mother (Britt Eklund) return to the basement to find that the father had faked his destruction with a stake-proof vest full of ketchup.
In “The Ghouls”, a movie director named Sam (Stuart Whitman) is scouting locations for his next film and visits an isolated and decrepit village called Loughville, where the residents take him prisoner. They are a species of ghouls, corpse-eating demons who dig up graves. But there are no graves left and they need flesh. Sam meets Luna (Lesley Dunlop), a Hum-Ghoul, her father being a ghoul (Patrick Magee) and her deceased mother a human. Luna advises Sam to hide in the church as ghouls cannot cross holy ground. With Luna’s help, he almost escapes, but Luna is killed and he is brought back by the Ghoul Police. In the film’s Epilogue, Eramus cheerfully lists out loud all the imaginative ways that humans treat each other horribly and says that they are the worst monsters of all. So Chetwynd-Hayes, horror-writer, is made an honorary member of the Monster Club.
The film was directed by Roy Ward Baker, based on the work of real British horror author R. Chetwynd-Hayes. It was the final movie of producer Milton Surotsky and the last one directed by Baker. The role of Chetwynd-Hayes was rejected by Christopher Lee and another role was rejected by Peter Cushing. Chetward-Hayes was disappointed by the film, calling the humor silly, hating the pop-music, and not liking the way his stories were altered. Also, he thought John Carradine was too old to play him. Critics and the public didn’t like it much either.
A vampire film producer appeared with the name of Lintom Busotsky, an anagram of the real producer Milton Subotsky. The music was by BA Robertson, the Viewers, The Pretty Things, UB 40, and Night. There was a comic book which acted as a promotional tool for the film. This was the only time in his career that Vincent Price played a vampire. The film opened in the UK on Price’s 70th birthday, but was never released in the US, though it surfaced on a home video hosted by Elvira, Mistress of the Dark (Cassandra Peterson).