A teenaged girl discovers that her stepfather is trying to murder her and her mother, but when she tells people, no one will believe her.

Five highly-trained KGB agents are sent to the west to assassinate several Soviet dissidents. In order to stop the diabolical plot, an American agent must infiltrate Soviet intelligence and obtain…

A crew of interplanetary archaeologists is threatened when an alien creature impregnates one of their members, causing her to turn homicidal and murder them one by one.