Director
Jacques Tourneur
DIRECTOR
Stars (in credits order)
Dana Andrews
John Holden
Peggy Cummins
Joanna Harrington
Niall MacGinnis
Doctor Julian Karswell
Maurice Denham
Professor Henry Harrington
Athene Seyler
Mrs. Karswell
Liam Redmond
Mark O'Brien
Reginald Beckwith
Mr. Meek
Ewan Roberts
Lloyd Williamson
Peter Elliott
Kumar
Rosamund Greenwood
Maggie Meek
Brian Wilde
Rand Hobart
Richard Leech
Inspector Mottram
Lloyd Lamble
Detective Simmons
Peter Hobbes
Superintendent
Charles Lloyd Pack
Chemist
John Salew
Librarian
Janet Barrow
Mrs. Hobart (deleted from US print)
Percy Herbert
Farmer (deleted from US print)
Lynn Tracy
Air Hostess (deleted from US print)
Clare Asher
Minor Roleuncredited
Michelle Aslanoff
Alan Beaton
Man at Lectureuncredited
Hyma Beckley
Scientific Conference Audienceuncredited
Ballard Berkeley
1st Reporteruncredited
The Blake Twins
Minor Rolesuncredited
Ernest Blyth
Man Reading in Libraryuncredited
Wallace Bosco
Train Passengeruncredited
Daniel Brown
Demonuncredited
Jimmy Cains
Railway Workeruncredited
George Curtis
Police Sergeantuncredited
Alistair Dick
Richard Duke
Shay Gorman
Narratoruncredited,voice
John Harvey
Hobart's Brotheruncredited
Laurence Hepworth
Train Guarduncredited
Irene Hollis
Walter Horsbrugh
Bates the Butleruncredited
Yvette Hosler
Arthur Howell
Robert Howell
Anthony John
Childuncredited
Dan Lester
Ticket Collectoruncredited
Leonard Llewellyn
Airline Passengeruncredited
Michael Peake
2nd Reporteruncredited
Paul Phillips
Lift Attendantuncredited
Anthony Richmond
Urchinuncredited
Peggy Scott Sanders
Terry Sartain
Leonard Sharp
Bert Simms
Lab Assistantuncredited
Robert Brooks Turner
Hobart Family Memberuncredited