An alien from Venus tries to take over the world with the help of a disillusioned human scientist, as his wife, his best friend and the friend's wife try to intervene.

An unfaithful businessman rents a spare room from two siblings to use for his sexual conquests, unaware that they're serial killers who murder every woman he brings there.

A spaceship is sent to Mars after an alien distress signal is picked up. They find one survivor, but when a crew member is found drained of blood it's evident they have rescued a bloodsucking monster. (Uses footage from Encounter in Space (1963).)

High-priced prostitutes are being systematically murdered, their corpses mutilated, and a bizarre South American symbol painted in blood is found at the scene. The cop investigating is out to solve the crime before his ex wife, a reporter, becomes the next victim.

Rasputin, a crazed and debauched monk wreaks havoc at the local inn one night, chopping off the hand of one of the drinkers. As the bitter locals plan their revenge, the evil Rasputin works his power over the beautiful women who serve at the Tsar's palace. Even the Tsarina herself is seduced by his evil ways and, as his influence begin...