Complicated plot involving missing stamp collection and kidnapped businessman, with the Lone Wolf keeping one step ahead of the police in Havana trying to solve the crime and make a profit.
| Directing | Sidney Salkow | Director |
| Writing | Earl Felton | Screenplay |
| Writing | Earl Felton | Story |
| Writing | Sidney Salkow | Screenplay |
| Writing | Sidney Salkow | Story |
| Writing | Louis Joseph Vance | Characters |
| Camera | Barney McGill | Director of Photography |
| Editing | Richard Fantl | Editor |
| Art | Lionel Banks | Art Direction |
| Costume & Make-Up | Robert Kalloch | Costume Design |
| Sound | Morris Stoloff | Music Director |
