For more than two centuries, a section of Nova Scotia's Oak Island has been the site of a relentless and deadly treasure hunt. The focus is a deep, man-made shaft known as the "Money Pit," first discovered in 1795 and allegedly protected by a series of sophisticated booby traps, most notably engineered flood tunnels that fill the pit with seawater as excavators approach its presumed bottom. Despite numerous costly and technologically advanced expeditions that have reported discovering artifacts like non-native coconut fiber and a stone tablet with cryptic symbols, no verifiable treasure has ever been unearthed. The origin and purpose of the elaborate structure remain completely unknown, and the obsessive quest to solve its puzzle has resulted in the deaths of six people.