Public Hero Number 1

G-Man Jeff Crane poses as a crook to infiltrate the notorious Purple Gang, a band of hoodlums which preys upon other hoodlums. Orchestrating the jailbreak of the gang's leader, Crane joins him in a Dillinger-like flight across the country.

• 
  J. Walter Ruben
• 
  Hugh Boswell
• 
  Robert E. Barnes

• 
  Lionel Barrymore
  Dr. Josiah Glass
• 
  Jean Arthur
  Maria Theresa 'Terry' O'Reilly
• 
  Chester Morris
  Jeff Crane
• 
  Joseph Calleia
  Sonny 'Dinkie' Black
• 
  Paul Kelly
  Special Agent James Duff
• 
  Lewis Stone
  Prison Warden
• 
  Paul Hurst
  Rufe Parker
• 
  George E. Stone
  Butch
• 
  Sam Baker
  Mose Jones
• 
  William Bailey
  Federal Agent (uncredited)
• 
  Brooks Benedict
  Bar Patron (uncredited)
• 
  Ed Brady
  Convict in Prison (uncredited)
• 
  Lane Chandler
  Train Conductor (uncredited)
• 
  Cora Sue Collins
  Little Girl (uncredited)
• 
  Helene Costello
  Convict Wife (uncredited)
• 
  Nell Craig
  Duff's Secretary with Telegram (uncredited)
• 
  Frank Darien
  Dr. Hale - Plastic Surgeon (uncredited)
• 
  James Flavin
  Flavin - Federal Agent (uncredited)
• 
  Harry Geise
  Convict (uncredited)
• 
  John George
  Convict (uncredited)