The mystery around exactly what’s found on The Curse of Oak Island Season 5 continues to grow just days before the premiere — with a new trailer revealing a cryptic historical letter. The trailer includes several never-seen-before pieces of footage, including Rick Lagina being handed an item found during a dig. The mystery letter then appears after a shot of Marty Lagina’s son Alex walking into a room with a chest. A close-up of the letter shows that it mentions Philadelphia and a “return to Baltimore” as well as a “bond” and a sum of money. The letter appears to...read more