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).

Cast:Florence Marly, Basil Rathbone, John Saxon, Judi Meredith, Dennis Hopper, Robert Boon,

Genre:Science Fiction, Horror,

country:United States of America,

Production:Cinema West Productions, American International Pictures,