"While vacationing in St. Moritz, a British couple receive a clue to an imminent assassination attempt, only to learn that their daughter has been kidnapped to keep them quiet."
Leslie Banks
as Bob Lawrence
Edna Best
as Jill Lawrence
Peter Lorre
as Abbott
Frank Vosper
as Ramon Levine
Hugh Wakefield
as Clive
Nova Pilbeam
as Betty Lawrence
Pierre Fresnay
as Louis Bernard
Cicely Oates
as Nurse Agnes
D.A. Clarke-Smith
as Binstead
George Curzon
as Gibson
Frank Atkinson
as Policeman Shot Behind Mattress (uncredited)
Betty Baskcomb
as Lawrence's Maid (uncredited)
Cot D'Ordan
as Concierge (uncredited)
Tony De Lungo
as Hotel Manager (uncredited)
Clare Greet
as Mrs. Brockett (uncredited)
Pat Hagan
as Policeman at Siege (uncredited)
Joan Harrison
as Secretary (uncredited)
Edward A. Hill-Mitchelson
as Minor Role (uncredited)
Alfred Hitchcock
as Man in Raincoat Passing Bus (uncredited)
James Knight
as Police Inspector (uncredited)
Arnold Lucy
as Foreign Dignitary - Target of Assassination (uncredited)
Andreas Malandrinos
as Police Sergeant (uncredited)
Henry Oscar
as Dentist George Barbor (uncredited)
Charles Paton
as Shopkeeper (uncredited)
Frederick Piper
as Policeman with Rifle (uncredited)
H.G. Stoker
as Police Chief at Siege (uncredited)
Robert Brooks Turner
as Policeman (uncredited)
Jack Vyvyan Baker
as Policeman Shot at Front Door (uncredited)
Percy Walsh
as Detective Inspector (uncredited)
Hal Walters
as Postman (uncredited)
S. J. Warmington
as Rawlings - Gang Member (uncredited)
Edward Wild
Michael Wilding
as Man at Clay Pigeon Shoot (uncredited)
Director
D.B. Wyndham-Lewis
Writer
Hugh Stewart
Editor
Charles Bennett
Michael Balcon
Producer
Curt Courant
Director of Photography
Louis Levy
Music Director
Ivor Montagu
Associate Producer
Peter Proud
Set Designer
Arthur Benjamin
Music
Charles Williams
F. McNally
Sound Recordist
Alfred Junge
Art Direction
Pen Tennyson
Assistant Director
Emlyn Williams
Additional Dialogue
Richard Beville
Unit Production Manager
Ted Lloyd
Camera Operator
A.R. Rawlinson
Scenario Writer
Sets & Props Artist
Peter Sargent
Clapper Loader
Fortunino Matania
Painter
Edwin Greenwood