Christmas has never been more magical! Travel to Camelot with Jack, Annie and The Magic Tree House in this holiday fantasy adventure! The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! When Jack and Annie receive an invitation to spend Christmas Eve in Camelot-a magical place that exists only in myth and fantasy-they know they are in for their biggest adventure yet. What they don't know is that the invitation will send them on a quest to save Camelot. Can they succeed even though Camelot's greatest knights have failed? Formerly numbered as Magic Tree House #29, the title of this book is now Magic Tree House Merlin Mission #1: Christmas in Camelot. Did you know that there's a Magic Tree House book for every kid? Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures Have more fun with Jack and Annie at MagicTreeHouse.com!