Ex-police/army dog King inherits a fortune from an eccentric millionaire. But someone poisons him for his fortune. He gets to go back to earth as a human detective to bring his killer to justice and protect the girl who used to look after him.
Dick Powell
as Rex Shepherd
Peggy Dow
as Ellen Hathaway
Joyce Holden
as Goldie Harvey
Charles Drake
as Perry Collins
Albert Sharpe
as Grandpa Hathaway
Lou Polan
as Sergeant Novak
Frank Nelson
as Lieutenant Gilpin
William Vedder
as Nicholas
Frank Gerstle
as Detective
Anthony George
as Louie Luisetti
Tom Dugan
as Bus Driver (uncredited)
Henry Kulky
as Gorilla / Prisoner (uncredited)
