Jack and Annie's summer vacation is no day at the beach! The bestselling, fan-favorite chapter-book series celebrates the summer solstice! In the paperback edition of the 31st Magic Tree House adventure, Jack and Annie are on a quest to a seaside land of mystery and myth, where they must overcome their fears and solve an ancient riddle. Magic Tree House books are New York Times bestsellers. They are known all around the world as books that inspire reading. Find out why with Summer of the Sea Serpent!

Jack and Annie's summer vacation is no day at the beach! The bestselling, fan-favorite chapter-book series celebrates the summer solstice! In the paperback edition of the 31st Magic Tree House adventure, Jack and Annie are on a quest to a seaside land of mystery and myth, where they must overcome their fears and solve an ancient riddle. Magic Tree House books are New York Times bestsellers. They are known all around the world as books that inspire reading. Find out why with Summer of the Sea Serpent! MARY POPE OSBORNE is the author of many novels, picture books, story collections, nonfiction books, and chapter books—including all of the Magic Tree House books, which have been translated into numerous languages around the world. She works with her husband, Will, and her sister, Natalie, on the nonfiction companion series, Magic Tree House Research Guides. Mary lives in Connecticut with Will and their three Norfolk terriers, Joey, Mr. Bezo, and Little Bear. For more information, visit MaryPopeOsborne.com.SAL MURDOCCA has illustrated over 200 children's trade and textbooks. He is also a librettist for a children's opera, a video artist, an avid runner, hiker, and bicyclist, and a teacher of children's illustration at the Parsons School of Design. He has illustrated all of the Magic Tree House books and all of the Magic Tree House Research Guides. Sal and his wife split their time between New York and France.