John O'Brien first learned about Oak Island in 1958 at the age of twelve, listening intently as his pharmacist father and a Saint Mary's University professor debated, for an entire winter, the merits of existing theories of Oak Island and the mysterious lost treasures of the world. After fifty-five years of research and puzzling over this mystery, many visits to the island, tens of thousands of miles traveled, and thirty-six years working underground, as well as countless books devoured about Oak Island, other famous world mysteries and the Mesoamericans, O'Brien had much of the puzzle in hand.