Dr. John Holden
Dana Andrews
Joanna Harrington
Peggy Cummins
Rand Hobart
Brian Wilde
Inspector Mottrarn
Richard Leech
Detective Simmons
Lloyd Lamble
Superintendent
Peter Hobbes
Chemist
Charles Lloyd Pack
Librarian
John Salew
Mrs. Hobart
Janet Barrow
Farmer
Percy Herbert
Air Hostess
Lynn Tracy
Hobart's Brother
John Harvey
Dr. Julian Karswell
Niall MacGinnis
Alan Beaton
Hyma Beckley
Ballard Berkeley
Ernest Blyth
Wallace Bosco
Daniel Brown
Jimmy Cains
George Curtis
Richard Duke
Shay Gorman
Professor Henry Harrington
Maurice Denham
Laurence Hepworth
Walter Horsbrugh
Arthur Howell
Anthony John
Dan Lester
Leonard Llewellyn
Michael Peake
Paul Phillips
Anthony Richmond
Peggy Scott Sanders
Mrs. Karswell
Athene Seyler
Terry Sartain
Leonard Sharp
Bert Simms
Robert Brooks Turner
Professor Mark O'Brien
Liam Redmond
Mr. Meek
Reginald Beckwith
Lloyd Williamson
Ewan Roberts
Professor K.T. Kumar
Peter Elliott
Mrs. Meek
Rosamund Greenwood
Director
Jacques Tourneur
Short Story
M.R. James
Production Design
Ken Adam
Screenplay
Charles Bennett
Hal E. Chester
Producer
Frank Bevis
Director of Photography
Edward Scaife
Editor
Michael Gordon
Casting
Robert Lennard
Assistant Art Director
Peter Glazier
ADR & Dubbing
Charles Crafford
Special Effects
George Blackwell
Wally Veevers
Hairstylist
Betty Lee
Executive Producer
Sound Effects Editor
Continuity
Pamela Gayler
Visual Effects Camera
S.D. Onions
Music Director
Muir Mathieson
Assistant Director
Basil Keys
Production Manager
R. L. M. Davidson
Original Music Composer
Clifton Parker
Sound Recordist
Arthur Bradburn