奥斯卡·霍莫尔卡
饰 Karl Verloc - Her Husband
Desmond Tester
饰 Stevie - Her Young Brother
Matthew Boulton
饰 Superintendent Talbot
S. J. Warmington
饰 Hollingshead
William Dewhurst
饰 The Professor
Clare Greet
饰 Mrs. Jones (uncredited)
Aubrey Mather
饰 Greengrocer (uncredited)
Austin Trevor
饰 Monocle Man (uncredited)
Charles Hawtrey
饰 Studious Youngster (uncredited)
Martita Hunt
饰 The Professor's Daughter (uncredited)
托林·撒切尔
饰 Mr. Verloc's Visitor (uncredited)
彼得·布尔
饰 Mr. Verloc's Visitor (uncredited)
阿尔弗雷德·希区柯克
饰 Man Walking Past the Cinema as the Light Is Renewed
