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.
| Writing | J. Walter Ruben | Story |
| Directing | J. Walter Ruben | Director |
| Writing | Wells Root | Screenplay |
| Writing | Wells Root | Story |
| Costume & Make-Up | Dolly Tree | Wardrobe Master |
| Editing | Frank Sullivan | Editor |
| Art | Cedric Gibbons | Art Direction |
| Camera | Gregg Toland | Director of Photography |
| Directing | Hugh Boswell | Assistant Director |
| Sound | Douglas Shearer | Sound |
| Directing | Robert E. Barnes | Assistant Director |
| Sound | Edward Ward | Original Music Composer |
