Released from captivity in Vietnam, two American Army officers return to civilian life and discover they have acquired an insatiable taste for human flesh. A city is terrorised... as they stalk the inhabitants to satisfy their primitive appetites.

An archeologist's wife has recurring nightmares about ritual killings in an Etruscan tomb while her husband is away excavating a lost temple. After a phone call where she is forced to listen to him being murdered, she travels to the excavation site to solve the mystery of his death.

1986 film by Sergio Martino

film directed by Robert Butler

1956 film by Harry Keller

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).