Samuel Blight

Alastair Sim

Larry Preston

Barry K. Barnes

Foreign Agent

Carl Jaffe

Miss. Sampson

Cathleen Nesbitt

Barber

Cyril Smith

Judge

James Harcourt

Janet Preston

Diana Churchill

Detective Inspector Bray

Edward Chapman

Mrs. Honeycombe

Ruby Miller

Heinreks

Austin Trevor

Another Agent

Leo Genn

Detective Delacroix

Geoffrey Sumner

Agent Posing as Reporter

Glen Alyn

Karl Bergsen

Torin Thatcher

Assistant Director

George Pollock

Director

David MacDonald

Screenplay

Roger MacDougall

Producer

K.C. Alexander

Music

Francis Chagrin

Director of Photography

Ernest Palmer

Editor

Douglas Myers

Art Direction

James A. Carter

Production Manager

Louis London

Sound Recordist

Leo Wilkins

Camera Operator

Cecil Cooney