A United Nations investigator crosses paths with a pair of psychic sisters on his way to Trollenberg observatory in the Swiss Alps, which has been plagued by a series of mountaineer disappearances that may be related to a radioactive cloud at the mountain's south face.
Genres: Horror, Science Fiction
Cast: Forrest Tucker, Jennifer Jayne, Janet Munro, Laurence Payne, Warren Mitchell, Frederick Schiller
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