Undercover

John Clements

Milos Petrovitch

Tom Walls

Kossan Petrovitch

Rachel Thomas

Maria Petrovitch

Stephen Murray

Dr. Stephan Petrovitch

Mary Morris

Anna Petrovitch

Godfrey Tearle

General von Staengel

Robert Harris

Col. Von Brock

Michael Wilding

Constantine

Charles Victor

Sergeant

Niall MacGinnis

Dr. Jordon

Ivor Barnard

Station Master

Ben Williams

Dragutin

George Merritt

A Yugoslav General

Stanley Baker

Petar

Tecwyn Jones

Danilo

Eynon Evans

Lieut. Banse

Norman Pierce

Lieut. Franke

Eric Micklewood

Lieut. Von Klotz

Finlay Currie

Priest (uncredited)

Gina Evans

Woman (uncredited)

Michael Balcon

Producer

John Dighton

Screenplay

Wilkie Cooper

Camera Operator, Director of Photography

John Croydon

Production Supervisor

Monja Danischewsky

Screenplay

Ernest Irving

Music Director

Sidney Cole

Supervising Editor

Hal Mason

Unit Manager

S.C. Balcon

Associate Producer

Duncan Sutherland

Art Direction

Eily Boland

Editor

Sergei Nolbandov

Director

Roy Kellino

Special Effects

Doris Zinkeisen

Costume Design

George Slocombe

Story

Frederic Austin

Music

Len Page

Sound Recordist

Eric Williams

Sound Supervisor

Hal Britten

Camera Operator

Ronald Brantford

Unit Manager