Ralph Richardson as David Preston

Margaret Leighton as Janet Preston

Campbell Singer as Inspector Hemingway

Jack Hawkins as Dr. Sparling

Michael Shepley as Major Watson

Frederick Piper as Solicitor Petheridge

Meriel Forbes as Peggy Dobson

Margaret Withers as Mrs. Watson

Gerald Case as Sergeant Evans

Diana Beaumont as Ellen

Archie Duncan as Station Sergeant (uncredited)

Johnnie Schofield as Joe Dobson (uncredited)