Isle of the Damned (2008)

Private investigator Jack Steele, along with his adopted son Billy, embarks on a treacherous adventure when a mysterious treasure hunter enlists his help to uncover Marco Polo's lost treasure. Their quest leads them to a remote island off Argentina, where they encounter the savage Yamma Yamma tribe. Complicating matters is Alexis Kinkaid, a reclusive inhabitant who may possess vital knowledge about the island's secrets. As danger looms, Jack and Billy must navigate a perilous world of cannibals and ancient rituals. Originally released in 1980, Isle of the Damned is now available in a newly remastered edition.