
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.

as Alan Brooks

as Sarah Pilgrim

as Anne Pilgrim

as Philip Truscott

as Prof. Crevett

as Mayor Klein

as Hans

as Brett

as Dewhurst

as Wilde

as First Villager

as Second Villager

as First Student Climber

as Second Student Climber

as Carl

as Fritz

as The Mother

as The Child

as The Spotter Pilot

as Voice of Beheaded Climber Jim

as Evacuated Villager (uncredited)

as Evacuating Villager (uncredited)

as Evacuated Villager (uncredited)

as Stationmaster (uncredited)

as Evacuated Villager (uncredited)

as Mountain Rescue Stretcher Bearer (uncredited)