After Pearl Harbor, convicts at Alcatraz prison live in fear of bomb attacks, driving Champ Larkin and his pal Jimbo to a desperate escape attempt which lands them on a tiny lighthouse island, where they take over. The five inhabitants are stymied in their efforts to summon aid. But the island also figures in the schemes of a big Nazi spy ring; which will win out, the gangsters' greed or their patriotism?
| Directing | Edward Dmytryk | Director |
| Writing | John D. Klorer | Story |
| Writing | Joseph Krumgold | Screenplay |
| Production | Herman Schlom | Producer |
| Camera | Robert De Grasse | Director of Photography |
| Art | Albert S. D'Agostino | Art Direction |
| Art | Feild M. Gray | Art Direction |
| Editing | George Crone | Editor |
| Sound | Roy Webb | Original Music Composer |
