Ralph Richardson

David Preston

Margaret Leighton

Janet Preston

Campbell Singer

Inspector Hemingway

Jack Hawkins

Dr. Sparling

Michael Shepley

Major Watson

Frederick Piper

Solicitor Petheridge

Meriel Forbes

Peggy Dobson

Margaret Withers

Mrs. Watson

Gerald Case

Sergeant Evans

Diana Beaumont

Ellen

Archie Duncan

Station Sergeant (uncredited)

Johnnie Schofield

Joe Dobson (uncredited)

R.C. Sherriff

Theatre Play

Ralph Richardson

Director

Anatole de Grunwald

Screenplay

Maurice Cowan

Producer

Edward Scaife

Director of Photography

Jack Hildyard

Director of Photography

Bert Bates

Editor

Guy Hamilton

Assistant Director

Malcolm Arnold

Original Music Composer

Vincent Korda

Set Decoration