David Kelsey, a research chemist, is in love with Annabel. He assumes another identity so that they can share their moments together in complete privacy. He even builds a beautiful dream home for the two of them. David is hopelessly infatuated with her. Unfortunately, Annabel wants no part of him. She's married and both she and her husband wonder when David will get the hint. He does not and eventually murders the couple. He installs her corpse in the bedroom of their dreamhouse so that she can be by his side for the rest of his life.

The mentally ill Dr. Fenwick is a supporter of the therapeutic value of role-playing in psychiatry. He kills the head of the sanatarium where he is a patient and assumes the man's identity. He locks doctors and nurses in the attic and gives their responsibilities to other patients. Things run rather smoothly until Natalie Rivers, the neice of the now dead head of the sanatarium, arrives for a visit. Since she has never seen her uncle before Fenwick is able to trick her into thinking that he is her uncle. Natalie discovers her real uncle's body and, not knowing who he is, asks Fenwick to call the police. He pretends to call the police and a patient pretending to be a detective shows up to look things over. Eventually Natalie discovers the staff locked in the attic. Fenwick tries to prevent her from telling anyone, but he is stopped by the police.

Karl Jorla is a European horror movie star that is contracted by a Hollywood studio to appear in his first American film. The producers of the film watch a demo film of Jorla as the leader of a satanic cult and feel that he will be perfect for their new film. After he comes to America, Jorla becomes worried that real satanists are after him. He thinks they may want to kill him for allowing his demo film to be shown. Jorla is given around the clock protection by the studio, but he is almost killed anyway. Jorla manages to convince the studio to allow him to stay at a secret location unknown to anyone but him. The studio agrees, but later become worried when he doesn't show up for the first day of filming. The director begins to film scenes around him, until Jorla suddenly appears on the set. He moans an address in Topanga Canyon and disappears. The police are called and everyone goes to the address where the find Jorla beaten to death.

Rusty Connors is a con man that has just been released from prison. He looks up the wife of his dead former cellmate, a robber and murderer, named Miles Krause. Before he was imprisoned, Krause stole a significant amount of money and killed his partner. The money and the body, however, never turned up. Connors talks to Krause's wife Helen and hopes that she knows where the money is. She, however, does not have a clue. Eventually, however, they are able to figure out that the money is stored in an abandoned boathouse that is now infested with rats. In the boathouse, they find the money and the dead and half-eaten body of Krause's partner. When Connors sees the money he is overcome with greed and tries to murder Helen. She manages to knock him out. When Connors awakens, he finds himself bound and gagged and being taunted by Helen. She gets up to leave with the money, but is tripped by Connors and is impaled on a hook. As she dies, the scent of her blood attracts the rats.

Cliff Allen is a television writer who is on way to Hollywood. On the way, he picks up a pretty hitchhiker named Rosie. As he is driving, Cliff is stopped by the police and Rosie accuses him of kidnapping her. Cliff denies everything, but the police make him go into town. On the way to town, Cliff's car breaks down and he is forced to stay over night in a run down hotel run by a washed-up vaudeville actor named Rudolph Bitzner who dreams of a comeback. At the motel, Cliff runs into Rosie who, not only works at the motel, but also is part of Rudolph's act. He apologizes for what she did and tells him that she only did it to get away from Rudolph who is planning to marry her. She tells Cliff that she still wants to leave and asks him to take her. He agrees and when his car is fixed he heads over to Rosie's. There he finds Rudolph who tells him that Rosie changed her mind. After cliff insists on hearing this from Rosie herself, Rudolph takes him to his rehearsal hall where Rosie sits wait

Martha Hunter is a mail order bride who has just moved into the rundown and not well-heated home of her new husband Luke. Martha is Luke's second wife and she becomes worried when she discovers that Luke's previous wife, who was also a mail order bride, died under mysterious circumstances on a vacation to Luke's relatives. Martha grows more fearful when she finds a offin like box and sees her husband digging in the cellar. When Luke suggests that they go one vacation she grows even more nervous. Prior to their departure, Luke insists that Martha go down to the cellar. Martha becomes terrified. She pulls a gun and kills Luke. After he is dead, she takes a look into the cellar and discovers that her husband installed a new furnace as a belated wedding gift.

Johnny Kendall is a trigger-happy cop who is fired from the police and is forced to take a job checking vacant summer homes during the off-season. His girlfriend Sandy gets a job as a waitress to try to help them make ends meet. At work, Johnny discovers that the previous deputy was fired from the job for having an affair with an unidentified woman in one of the vacant summer homes. Later, when Johnny sees the ex-deputy hanging around Sandy he becomes jealous and paranoid. One night, when he believes the two are together, he takes his gun and begins to look for them. He heads for the empty summer houses and finds one broken into. Inside he hears the former deputy and a woman. He shoots them both in the dark and kills them. He turns on the lights and discovers that the woman was not Sandy, but the sheriff's wife.