Nazi soldiers manage to evade the crocodiles guarding Astron's island. They also shoot down Cassidy's patrol plane, but he and his observer made their way through the jungle to the island with help of four harpies who have become lost while trying to return to Olympus. (Cassidy points out their problem might have to do with the Nazis occupying Greece.) The harpies kill the Nazis and Cassidy frees Astron.