Zombies of Mora Tau (also known as The Dead That Walk) is a 1957 black-and-white zombie horror film directed by Edward L. Cahn and starring Gregg Palmer, Allison Hayes and Autumn Russel. Distributed by Columbia Pictures, it was produced by Sam Katzman. The screenplay was written by George H. Plympton and Bernard Gordon. Zombies of Mora Tau was released on a double bill with another Katzman-produced film, The Man Who Turned to Stone . A team of deep sea divers, led by wealthy American tycoon George Harrison (Ashley), attempt to salvage a fortune in diamonds from the wreckage of a ship that had sunk 60 years earlier off the coast of Africa. When the team arrives, they discover that the ship is cursed and the diamonds are protected by the ship’s undead crew, now zombies, who are forced to guard the treasure until the diamonds are destroyed or the curse is finally lifted.