The stooges are private detectives hired to find a missing girl. The boys disguise as pie salesmen and end up wandering around a mad scientist's mansion, trying to find the girl. The boys confront a gorilla and various other bad guys, before rescuing the girl.
Shemp Howard
as Shemp
Larry Fine
as Larry
Moe Howard
as Moe
Norma Randall
as Mary Bopper
Philip Van Zandt
as Dr. Jeckyl
Tom Kennedy
as Mr. Hyde
Steve Calvert
as Gorilla (uncredited)
Frank Mitchell
as George B. Bopper (uncredited)
