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.
During a rainy Sunday afternoon, an escaped prisoner tries to hide out at the home of his ex-fiance.
A British psychiatrist devises a devilish revenge plot against his wife's lover.
