During World War I, German spies will stop at nothing to spy on the allied war plans stored at Gibraltar.
| Art | Max Rée | Art Direction |
| Production | William LeBaron | Producer |
| Writing | John Farrow | Dialogue |
| Writing | Ewart Adamson | Writer |
| Writing | Earl Derr Biggers | Story |
| Directing | Roy Pomeroy | Director |
| Sound | George D. Ellis | Sound Engineer |
| Editing | George Marsh | Editor |
| Editing | Ann McKnight | Editor |
| Camera | Nicholas Musuraca | Director of Photography |
| Sound | Roy Webb | Original Music Composer |
