Casting

Director

Jacques Tourneur

Producer

Frank Bevis

Executive Producer

Hal E. Chester

Screenplay

Charles Bennett, Hal E. Chester

Original Music Composer

Clifton Parker

Director of Photography

Edward Scaife

Editor

Michael Gordon

Casting

Robert Lennard

Production Design

Ken Adam

Hairstylist

Betty Lee

Dana Andrews
Dana AndrewsDr. John Holden
Peggy Cummins
Peggy CumminsJoanna Harrington
Niall MacGinnis
Niall MacGinnisDr. Julian Karswell
Maurice Denham
Maurice DenhamProfessor Henry Harrington
Athene Seyler
Athene SeylerMrs. Karswell
Liam Redmond
Liam RedmondProfessor Mark O'Brien
Reginald Beckwith
Reginald BeckwithMr. Meek
Ewan Roberts
Ewan RobertsLloyd Williamson
?
Peter ElliottProfessor K.T. Kumar
Rosamund Greenwood
Rosamund GreenwoodMrs. Meek
Brian Wilde
Brian WildeRand Hobart
Richard Leech
Richard LeechInspector Mottrarn
Lloyd Lamble
Lloyd LambleDetective Simmons
?
Peter HobbesSuperintendent
Charles Lloyd Pack
Charles Lloyd PackChemist
John Salew
John SalewLibrarian
?
Janet BarrowMrs. Hobart
Percy Herbert
Percy HerbertFarmer
?
Lynn TracyAir Hostess
John Harvey
John HarveyHobart's Brother
?
Alan Beaton
?
Hyma Beckley
Ballard Berkeley
Ballard Berkeley
?
Ernest Blyth
Wallace Bosco
Wallace Bosco
?
Daniel Brown
?
Jimmy Cains
?
George Curtis
?
Richard Duke
Shay Gorman
Shay Gorman
?
Laurence Hepworth
?
Walter Horsbrugh
?
Arthur Howell
?
Anthony John
?
Dan Lester
?
Leonard Llewellyn
Michael Peake
Michael Peake
?
Paul Phillips
?
Anthony Richmond
?
Peggy Scott Sanders
?
Terry Sartain
?
Leonard Sharp
?
Bert Simms
?
Robert Brooks Turner