The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system Abracadabra Jack and Annie are on a mission for Merlin the magician. They're looking for a secret of greatness from the best escape artist that ever lived, Harry Houdini. Using the magic tree house to travel back in time, Jack and Annie head to Coney Island to look for the elusive magician. How can they find the master of escape? It's going to take some determination, a little bit of trouble, and a whole lot of magic Formerly numbered as Magic Tree House #50, the title of this book is now Magic Tree House Merlin Mission #22: Hurry Up, Houdini 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 booksMerlin 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