Paul Carver is an Englishman who has recently lost his wife and children in a car accident. Waking from a nightmare, we find Carver on a plane traveling to Morocco, where he attempts to meet with a doctor, only to discover that the doctor has died. In despair, Carver ends up at the home of a German archaeologist, Otto Gunther, whom he met on the plane. It is here, in the midst of a party, that Carver first encounters the two women who will determine his destiny: Gunther's assistant, Chantal, and the mysterious Marissa. Grieving the loss of his loved ones and crippled by survivor's guilt, Carver must choose between life, represented by Chantal, and death, represented by Marissa.[4][5][6]
The Monthly Film Bulletin wrote: "The pink mist that billows from the eye socket of a skull throughout the opening credits augurs both the pretensions and the weaknesses of this rather dull exercise in the macabre. Despite some sterling decomposition work by the make-up department, the film relies heavily on old Hammer production tricks without contributing any original variations of its own; and the story is not helped by the portentous rhetoric of lines like "I too have lived in the shadows". William Sylvester leads the group of sweat-streaked humans battling indomitably against the unknown – in this case a species of lily-livered vampirism that would make Dracula turn in his shallow grave."[7]
