A scientist allows his young son to repair a robot, which comes under the control of an alien force.

Mad scientist Dr. Roger Girard (Bruce Dern) is experimenting with transplanting second heads onto farm animals. When an out-of-control maniac, Cass (Albert Cole), stumbles upon Girard's place, he kills the landlord, injures his dim-witted son, Danny (John Bloom), and seriously hurts himself, as well. Seizing the opportunity, Girard grafts Cass's head onto Danny's body in an effort to save them both. The experiment is successful, but the creation goes mad and wreaks havoc on the countryside.

When his cattle begin to mysteriously disappear, rancher Jimmy Ryan looks for answers. He is soon horrified to learn that a giant dinosaur hiding in Hollow Mountain is eating his livestock.

Hiram Stokely (Boris Karloff), a recently deceased man, discovers that he has only one day to enact a good deed in order to avoid eternal damnation. Hiram's scheming lawyer, Reginald Ripper (Basil Rathbone), is determined to get his fortune, and is willing to bump off potential heirs such as Chuck Phillips (Tommy Kirk) and Lili Morton (Deborah Walley) to achieve his goal. As Chuck, Lili and others have a lively pool party, Hiram recruits the ghost of his dead lover to help set things straight.

Bud and Lou find themselves hurtling through space with an escaped gangster, eventually landing on a strange planet.

Oscar Wilde's haunting story about a vain man who sells his soul for eternal youth.

Three stooges, Moe, Larry, and Curly, accidentally land on Venus, where a series of adventures await them.

Voodoo brings back a hit-and-run victim (Jon-Miki Thor), with a baseball bat, for revenge on rapists and a police chief (Adam West).

In this satire of 1950s sci-fi matinees, Lou Costello plays an amateur scientist who invents a time machine that also has a way of changing people into strange things as it moves them through time.

A group of British government scientists investigate strange radioactive readings at Headstone Manor, a site where 18 people were killed a couple of years before their visit.