Leslie Banks
Bob Lawrence

Edna Best
Jill Lawrence

Peter Lorre
Abbott

Frank Vosper
Ramon Levine

Hugh Wakefield
Clive

Nova Pilbeam
Betty Lawrence

Pierre Fresnay
Louis Bernard

Cicely Oates
Nurse Agnes

D.A. Clarke-Smith
Binstead

George Curzon
Gibson

Frank Atkinson
Policeman Shot Behind Mattress (uncredited)

Betty Baskcomb
Lawrence's Maid (uncredited)

Cot D'Ordan
Concierge (uncredited)

Tony De Lungo
Hotel Manager (uncredited)

Clare Greet
Mrs. Brockett (uncredited)

Pat Hagan
Policeman at Siege (uncredited)

Edward A. Hill-Mitchelson
Minor Role (uncredited)

James Knight
Police Inspector (uncredited)

Arnold Lucy
Foreign Dignitary - Target of Assassination (uncredited)

Andreas Malandrinos
Police Sergeant (uncredited)