At Phwitterby-on-Thames, England, a murder has occurred and Philo Holmes and Dr. Watkins are out to investigate it. It seems as though there was a second will and changes have been made as to who will receive what. Philo is the ace detective, and he brings everyone from the nightclub to see him solve the case.
Franklin Pangborn
as Dr. Watkins
Charles Judels
as Philo Holmes
William Tannen
as Ronny Belvedere
Pauline Brooks
as Lucy Willoughby
Mischa Auer
as Servant (uncredited)
Phil Dunham
as Night Club Reveller (uncredited)
Sarah Edwards
as Housekeeper (uncredited)
Otto Hoffman
as Grandfather Willoughby (uncredited)
Colin Kenny
as Detective at Crime Scene (uncredited)
C. Montague Shaw
as Luther Butts, Barrister Victim (uncredited)