In the Fabulous Thirties, Doc Savage and his five Amazing Adventurers are sucked into the mystery of Doc's father disappearing in the wilds of South America. The maniacal Captain Seas tries to thwart them at every turn as they travel to the country of Hidalgo to investigate Doc's father's death and uncover a vast horde of Incan gold.
| Writing | Lester Dent | Novel |
| Writing | Joe Morhaim | Screenplay |
| Writing | George Pal | Screenplay |
| Directing | Michael Anderson | Director |
| Camera | Fred J. Koenekamp | Director of Photography |
| Art | Fred Harpman | Art Direction |
| Art | Marvin March | Set Decoration |
| Production | George Pal | Producer |
| Sound | Frank De Vol | Original Music Composer |
| Editing | Thomas J. McCarthy | Editor |
| Crew | Dar Robinson | Stunt Coordinator |
| Crew | Whitey Hughes | Stunts |
