Aline MacMahon as Nurse Sarah Keate

Guy Kibbee as Detective Lt. Lance O'Leary

Patricia Ellis as March Federie, Richard's Granddaughter

Hobart Cavanaugh as Eustace Federie

Dorothy Tree as Mittie Federie

Robert Barrat as Adolphe Federie

Helen Flint as Isobel Federie - Adolphe's Wife

Lyle Talbot as Ross Lonergan

Henry O'Neill as Elihu Dimuck

Walter Walker as Richard Federie

Allen Jenkins as Police Sgt. Jim Jackson

Eddie Shubert as Detective Muldoon

Russell Hicks as Dr. Jay

Brandon Hurst as Grondal - the Butler

Joseph E. Bernard as 'Murph' Murphy - the Ballistics Expert (uncredited)

George Chandler as Evening Bulletin Reporter (uncredited)

Nick Copeland as Detective Davis aka Johnson (uncredited)

Joseph Crehan as Evening Bulletin Editor (uncredited)

Bill Elliott as Bank Teller (uncredited)

Virginia Howell as Kema - the Cook (uncredited)

Milton Kibbee as Evening Bulletin Archivist (uncredited)

Henry Otho as Frank - Detective (uncredited)

John J. Richardson as Reporter (uncredited)

Ferdinand Schumann-Heink as Reporter (uncredited)

Harry Seymour as Photographer (uncredited)

Huey White as Sarah's Taxi Driver (uncredited)

Jack Wise as Reporter (uncredited)