CRISPIN BOYER has written more than 15 books for National Geographic Kids, covering topics that young readers find fascinating, from bugs to boogers, ninjas to knights, and sharks to cyborgs. His debut middle-grade fiction series Zeus the Mighty combines Boyer’s ability to entertain with lively characters and educate with historical facts. He lives in Hawaii with his family. DR. REBECCA SIMON (expert contributor) is a leading pirate historian and author of Pirate Queens: The Lives of Anne Bonny and Mary Read and Why We Love Pirates: The Hunt for Captain Kidd and How He Changed Piracy Forever. She resides in California.