Franklin Pangborn

Dr. Watkins

Charles Judels

Philo Holmes

William Tannen

Ronny Belvedere

Pauline Brooks

Lucy Willoughby

Mischa Auer

Servant (uncredited)

Phil Dunham

Night Club Reveller (uncredited)

Sarah Edwards

Housekeeper (uncredited)

Otto Hoffman

Grandfather Willoughby (uncredited)

Colin Kenny

Detective at Crime Scene (uncredited)

C. Montague Shaw

Luther Butts, Barrister Victim (uncredited)

Felix E. Feist