• 
  Wallace Beery

  Sgt. Shaun Madden
• 
  Tom Brown

  Albert 'Al' Boylan, Jr.
• 
  Alan Curtis

  Dennis Madden
• 
  Laraine Day

  Eileen Daly
• 
  Neil Fitzgerald

  Casey (police broadcaster)
• 
  David Gorcey

  Punchy LePage
• 
  Donald Haines

  Milton
• 
  Fay Holden

  Mary Madden

• 
  Dickie Jones

  Dennis Madden, as a boy
• 
  John Kelly

  Henchman Nero
• 
  Marc Lawrence

  'Piggy' Ceders
• 
  Marion Martin

  Charlotte LePage
• 
  Etta McDaniel

  Dove (Madden's maid)
• 
  Horace McMahon

  Philadelphia (as Horace MacMahon)
• 
  Ben Welden

  Henchman Stemmy