Ralph Thomas
Director
Frank Harvey
Screenplay
John Buchan
Novel
Ernest Steward
Cinematography
Clifton Parker
Music
Mike Fox
Clapper Loader
Alfred Roome
Editor
Betty E. Box
Producer
Kenneth More
Richard Hannay
Taina Elg
Miss Fisher
Brenda De Banzie
Nellie Lumsden
Barry Jones
Professor Arthur Logan
Reginald Beckwith
Lumdsen
Faith Brook
Mandy Robinson ("Nannie")
Michael Goodliffe
Brown
James Hayter
Mr Memory
Duncan Lamont
Jameson Clark
MacDougal
Andrew Cruickshank
Sheriff
Leslie Dwyer
Milkman
Betty Henderson
Mrs, MacDougal
Joan Hickson
Miss Dobson
Sid James
Perce Baker
Brian Oulton
Barbara Steele
Extra
Marianne Stone
Hospital Administrator (uncredited)
Jill Haworth
Schoolgirl on Train (uncredited)
Peter Vaughan
2nd Police Constable on Train (uncredited)
Carol White
Schoolgirl in Assembly Hall (uncredited)
Bill Simpson
Bridegroom (uncredited)
Sam Kydd
Train restaurant staff (uncredited)
Michael Brennan
Detective on Train (uncredited)
Bruce Seton
Policeman on Train (uncredited)
Margot Boyd
John Grieve
