Edward G. Robinson character Professor Richard Wanley
Joan Bennett character Alice Reed
Raymond Massey character Dist. Attorney Frank Lalor
Edmund Breon character Dr. Michael Barkstane
Dan Duryea character Heidt / Tim, the Doorman
Thomas E. Jackson character Inspector Jackson
Dorothy Peterson character Mrs. Wanley
Arthur Loft character Claude Mazard / Frank Howard / Charlie the Hatcheck Man
Frank Dawson character Collins, the Steward
Robert Blake character Dickie Wanley (uncredited)
Frances Morris character Stenographer (uncredited)
Iris Adrian character Streetwalker (uncredited)
Brandon Beach character Man at Club (uncredited)
Paul Bradley character Man at Club (uncredited)
James Carlisle character Man at Club (uncredited)
Fred Hueston character Man at Club (uncredited)
Sheldon Jett character Man at Club (uncredited)
Jack W. Johnston character Man at Club (uncredited)
Charles Meakin character Man at Club (uncredited)
Harold Minjir character Man at Club (uncredited)
Wedgwood Nowell character Man at Club (uncredited)
Louis Payne character Man at Club (uncredited)
Scott Seaton character Man at Club (uncredited)
Wyndham Standing character Man at Club (uncredited)
Larry Steers character Man at Club (uncredited)
Don Brodie character Onlooker at Gallery (uncredited)
Frank Melton character Onlooker at Gallery (uncredited)
Claire Carleton character Blonde (uncredited)
Eddy Chandler character Police Driver (uncredited)
Tom Dillon character Police Officer Dillon (uncredited)
Freddie Chapman character Boy with Mother (uncredited)
Alec Craig character Garage Man (uncredited)
Hal Craig character News Vendor (uncredited)
Joe Devlin character Toll Collector on Henry Hudson Parkway (uncredited)
Ralph Dunn character Traffic Cop (uncredited)
Bess Flowers character Bar Patron (uncredited)
Jack Gardner character Fred, the District Attorney's Chauffeur (uncredited)
Jack Gargan character Club Steward (uncredited)
James Harrison character Club Steward (uncredited)
Fred Graham character Motorcycle Cop (uncredited)
Tom Hanlon character Radio Announcer (uncredited)
Harry Hayden character Pharmacist (uncredited)
Donald Kerr character First Elevator Operator (uncredited)
Frank McLure character Elevator Operator (uncredited)
George McFarland character Boy Scout who finds Mazard's Body (uncredited)
Frank Mills character Charlie the Garage Helper (uncredited)
Anne O'Neal character Mother by Elevator (uncredited)
Dave Pepper character Club Member (uncredited)
Fred Rapport character Club Manager (uncredited)
Alexander Pollard character William the Headwaiter (uncredited)
Arthur Space character Captain Kennedy (uncredited)
