The Ringer
In this mystery, a master of disguises commits a series of crimes. He is so good, that no one knows what he really looks like. He even masquerades as a doctor and kills his own partner who has been under police protection because he agreed to lead him to the crook. Later it is revealed the chameleon like criminal was out for revenge against the partner as he killed the fellow's sister.
Director: Walter Forde
Starring: John Longden, Gordon Harker, Patric Curwen, Dorothy Bartlam, Henry Hallatt