Donald Cook
— Dr. Truman Harwell
Jean Rouverol
— Eleanore Leavenworth
Erin O'Brien-Moore
— Gloria Leavenworth
Maude Eburne
— Phoebe Leavenworth
Warren Hymer
— O'Malley
Ian Wolfe
— Hudson
Norman Foster
— Detective Bob Grice
Frank Sheridan
— Silas Leavenworth
Gavin Gordon
— Henry Clavering
Clay Clement
— Inspector Holmes
Peggy Stratford
— Miss Owens
Archie Robbins
— Duke
Bess Stafford
— The Bulldog Woman
Lucille Ward
— The Pekingese Woman
Marie Rice
— Sarah - a servant
Carl Stockdale
— Leavenworth-Clavering Bookkeeper
Broderick O'Farrell
— Chemical Analysist
Dagmar Oakland
— Miss Hill
Lee Prather
— Fingerprint Expert
Belle Mitchell
— The Cat Woman