Donald Crisp
Police Inspector Lewis Lane
John Litel
Mr. Monroe, Prosecuting Attorney
Ronald Reagan
Radio Announcer (voice) (uncredited)
Mary Field
Millie - Mrs. Updyke's Maid (uncredited)
Frank Anthony
Gambler in Room 920 (uncredited)
Wade Boteler
Captain MacLevy (uncredited)
Sidney Bracey
Police Chemist (uncredited)
John Breen
Spectator at Robbery (uncredited)
Georgia Caine
Mrs. Frederick R. Updyke (uncredited)
Romaine Callender
Roberts - Updyke's Butler (uncredited)
Glen Cavender
Alarm Company Clerk (uncredited)
Loia Cheaney
Nurse Conner (uncredited)
Bud Cokes
Courtroom Spectator (uncredited)
Hal Craig
Detective Getting Rocks' Fingerprints (uncredited)
Hal K. Dawson
Pedestrian at Burglary Site (uncredited)
Frank Fanning
Fingerprint Expert (uncredited)
Edward Gargan
Police Sergeant (uncredited)
William Haade
Mrs. Updyke's Watchman (uncredited)
Winifred Harris
Mrs. Ganswoort - Patient (uncredited)
John Harron
Alarm Company Operator (uncredited)
Thomas E. Jackson
Inspector Connors (uncredited)
Al Lloyd
Sequin Hotel Desk Clerk (uncredited)
Jack Mower
Second Detective (uncredited)
Frank Reicher
Professor O.J. Ludwig (uncredited)
Ky Robinson
Third Detective (uncredited)
Ruth Robinson
Updyke's Guest (uncredited)
Libby Taylor
Mrs. Jefferson - Jo's Maid (uncredited)
Monte Vandergrift
First Detective - with Earphones (uncredited)
