Mrs. Verloc (as Sylvia Sydney)
Karl Verloc--Her Husband
Stevie
Detective Sgt. Ted Spencer
Renee
Superintendent Talbot
Hollingshead
The Professor
Miss Chatham's Daughter (uncredited)
Michaelis - Conspirator (uncredited)
Cinema Commissioner (uncredited)
Mrs. Jones - Cook (uncredited)
Studious Youth at the Aquarium (uncredited)
Man Walking Past the Cinema as the Light Is Renewed (uncredited)
Miss Chatman - The Professor's Daughter (uncredited)
Member of Cinema Crowd (uncredited)
Conspirator (uncredited)
W. Brown & Sons Greengrocer (uncredited)
Bus Conductor (uncredited)
Tailor (uncredited)
Commissionaire at Bijou Cinema (uncredited)
Yunct - Conspirator (uncredited)
Vladimir - Paymaster at Aquarium (uncredited)
Detective (uncredited)
Man with Daughter at Aquarium (uncredited)
Cinema Patron Who Wants His Money Back (uncredited)