Beyond the Caribbean (1936)

Andre Roosevelt, a cousin to US President Theodore Roosevelt, could afford to trot the globe filming safari and hunting expeditions, and footage from his travels and exploration was combined with some crudely-staged shots,in Hollywood, of him rescuing a ship captain---his sailing-ship captain E. Erskine Loch---and a woman from a cultish native tribe. Andre and Captain Benson (Erskine Loch) go into a Caribbean jungle with Rita de le Vega, whose dad was an explorer who lost his life among the savage Penitentes tribe, but left behind information concerning a treasure. They encounter the tribe who put on a voodoo ceremony by hanging a tribesman on a cross as a sacrifice under the supervision of the voodoo witch doctor. Using underwater diving equipment, Andre & Company find the lost pirate treasure in a stone idol, and head for their yacht with the savages in hot pursuit.