For over two centuries a small patch of land on an obscure island has baffled treasure hunters and scientists alike. Tantalizing clues indicate it may be the site of the world's greatest treasure, or it might be history's most elaborate hoax. Speculation about who is responsible for its puzzling origin runs the gamut from pirates to space aliens; but when the facts are laid out the evidence on mysterious and enigmatic Oak Island points to one group...the Freemasons.