Oskar Homolka
Karl Verloc - Her Husband
Desmond Tester
Stevie - Her Young Brother
Matthew Boulton
Superintendent Talbot
S. J. Warmington
Hollingshead
William Dewhurst
The Professor
Clare Greet
Mrs. Jones (uncredited)
Aubrey Mather
Greengrocer (uncredited)
Austin Trevor
Monocle Man (uncredited)
Charles Hawtrey
Studious Youngster (uncredited)
Martita Hunt
The Professor's Daughter (uncredited)
Torin Thatcher
Mr. Verloc's Visitor (uncredited)
Peter Bull
Mr. Verloc's Visitor (uncredited)
Alfred Hitchcock
Man Walking Past the Cinema as the Light Is Renewed
