

07/07/1958
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.

Forrest Tucker
as Alan Brooks

Jennifer Jayne
as Sarah Pilgrim

Janet Munro
as Anne Pilgrim

Laurence Payne
as Philip Truscott

Warren Mitchell
as Prof. Crevett

Frederick Schiller
as Mayor Klein

Colin Douglas
as Hans

Andrew Faulds
as Brett

Stuart Saunders
as Dewhurst

Derek Sydney
as Wilde

Richard Golding
as First Villager

George Herbert
as Second Villager

Jeremy Longhurst
as First Student Climber

Anthony Parker
as Second Student Climber

Leslie Heritage
as Carl

Theodore Wilhelm
as Fritz

Anne Sharp
as The Mother

Caroline Glazer
as The Child

Garard Green
as The Spotter Pilot

Jack Taylor
as Voice of Beheaded Climber Jim

Anna Cameron
as Evacuated Villager (uncredited)

Thomas Foulkes
as Evacuating Villager (uncredited)

Otto Friese
as Evacuated Villager (uncredited)

Jack Hetherington
as Stationmaster (uncredited)

Philip Johns
as Evacuated Villager (uncredited)

Reg Thomason
as Mountain Rescue Stretcher Bearer (uncredited)
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