Karl Anton Verloc and his wife own a small cinema in a quiet London suburb where they live seemingly happily. But Mrs. Verloc does not know that her husband has a secret that will affect their relationship and threaten her teenage brother's life.
Sylvia Sidney
as Mrs. Verloc
Oskar Homolka
as Karl Verloc - Her Husband
Desmond Tester
as Stevie - Her Young Brother
John Loder
as Ted
Joyce Barbour
as Renee
Matthew Boulton
as Superintendent Talbot
S. J. Warmington
as Hollingshead
William Dewhurst
as The Professor
Clare Greet
as Mrs. Jones (uncredited)
Aubrey Mather
as Greengrocer (uncredited)
Austin Trevor
as Monocle Man (uncredited)
Charles Hawtrey
as Studious Youngster (uncredited)