The most horrifying part of this British spooker is seeing former clean-cut teen idol Frankie Avalon cast as Chris, a London hooligan who with his druggie friends decides to spend the night in a supposedly haunted house and hold a seance. The seance is a bust, so the buddies decide to do a little exploration and split up. Unfortunately, one of them gets brutally killed, leaving Chris and his surviving pals to wonder who did the deed. Was it one of them, or was it a monstrous demon? Not wanting to attract undue attention, the punks decide to hide the body, zip their lips, and split from the house. Unfortunately, the cops find out and begin questioning everyone, causing Chris and his friend to return to the house and look for clues. For poor Chris, it is a fatal mistake. Just for the record, though he plays a teen, Avalon was 30 years old when this film was made. In Britain the film was released as The Haunted House of Horror.