Inspired by Edgar Wallace's "Sanders of the River," this adventure stars Dale Robertson as a shady American who plans to loot the treasures from sunken ships. Investigator Richard Todd, whose employees own the treasures, tries to stop him. Exciting underwater scenes are featured. With Heinz Drache, Marianne Koch, Derek Nimmo. 90 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.