Kenneth More
Richard Hannay
Brenda de Banzie
Nellie Lumsden
Barry Jones
Professor Logan
Andrew Cruickshank
Sheriff
Betty Henderson
Mrs. McDougal
Margot Boyd
Headmistress at St. Catherines
Michael Brennan
Detective on Train
Victor Brooks
Policeman at Accident
Pamela Chamberlain
Young Lady in Park
James Copeland
Police Constable at Roadblock
Dan Darnelli
Man in Audience
David Davies
Theatre Commissioner
Ursula Granville
Lady in Audience
John Grieve
Lowrie - Sheep Herder
Victor Hagan
Man in Audience
Victor Harrington
Questioner at Mr Memory Show
John Harvey
Detective at Theatre
Jeremy Hawk
Theatre Compere
Jill Haworth
Schoolgirl on Train
Eric Henderson
Train Passenger
Robert S. Holman
One of Two Cockney Boys
George Howell
Boy in Audience
Martin Lyder
Man in Audience
William Mervyn
Angry Train Passenger
John Richardson
Demolition Workman
Anthony Sagar
Policeman on Train
Bill Simpson
BBC Newsreader
John Snagge
Man in Audience
Barbara Steele
Hospital Administrator
Marianne Stone
Schoolgirl on Train
Susan Stranks
Man in Audience
Reg Thomason
Monica (Schoolgirl on train)
Harry Towb
2nd Police Constable on Train
Robert Vossler
Man in Audience
Eric Wetherell
Schoolgirl in Assembly Hall
Carol White
Audience Member
Winnie Wiblin
Man in Theatre Who Wants an Interval Drink
Vic Wise
Teacher at St. Catherines
Margaret Withers
Constable
US release: 10th October 1960
United Kingdom release: 13th March 1959
Denmark release: 15th April 1959
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