Mary Gordon
Mrs. Mamie Mahoney
Huntz Hall
Horace Debussy 'Satch' Jones
Nestor Paiva
Tony 'Piggy' Locarno
Frankie Darro
Cousin Jimmy
Wade Crosby
Henchman-Mechanic Mike
Gabriel Dell
Ricky Moreno
Leo Gorcey
Terence 'Slip' Mahoney
John Eldredge
Asst. Dist. Atty. John Willis
Robert Emmett Keane
Lawyer Felix Crowe
Rosemary La Planche
Daisy Harris
Dewey Robinson
Henchman 'Moose'
David Gorcey
Chuck
Wilbur Mack
Transfusion Doctor
John Elliott
The Judge
Benny Bartlett
Harry 'Jag' Harmon
Nelson Leigh
Fr. O'Hanlon
William Benedict
Whitey
Geneva Gray
Josie, his big sister