Professor Richard Wanley
Alice Reed
Dist. Attorney Frank Lalor
Dr. Michael Barkstane
Heidt / Tim, the Doorman
Inspector Jackson
Mrs. Wanley
Boy Scout who finds Mazard's Body
Dickie Wanley
Claude Mazard / Frank Howard / Charlie the Hatcheck Man
Collins, the Steward
Stenographer (uncredited)
Streetwalker (uncredited)
Man at Club (uncredited)
Onlooker at Gallery (uncredited)
Blonde (uncredited)
Police Driver (uncredited)
Police Officer Dillon (uncredited)
Boy with Mother (uncredited)
Garage Man (uncredited)
News Vendor (uncredited)
Toll Collector on Henry Hudson Parkway (uncredited)
Traffic Cop (uncredited)
Bar Patron (uncredited)
Fred, the District Attorney's Chauffeur (uncredited)
Club Steward (uncredited)
Motorcycle Cop (uncredited)
Radio Announcer (uncredited)
Pharmacist (uncredited)
First Elevator Operator (uncredited)
Elevator Operator (uncredited)
Charlie the Garage Helper (uncredited)
Mother by Elevator (uncredited)
Club Member (uncredited)
Club Manager (uncredited)
William the Headwaiter (uncredited)
Captain Kennedy (uncredited)
Stenographer