The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new easy-to-use numbering system! <p/>Jack and Annie are on a mission to find (and inspire!) creative people. This time Jack and Annie meet an Irish girl and go on a magical adventure that changes the girl's life--she grows up to be Lady Gregory who helped bring back the Irish legends started a theater and helped the Irish people revive both their heritage and their pride. <p/>Formerly numbered as Magic Tree House #43 the title of this book is now Magic Tree House Merlin Mission #15: <i>Leprechaun in Late Winter.</i> <p/>Did you know that there's a Magic Tree House book for every kid? <p/>Magic Tree House: Adventures with Jack and Annie perfect for readers who are just beginning chapter books<br><b>Merlin Missions: More challenging adventures for the experienced reader</b><br>Super Edition: A longer and more dangerous adventure<br>Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures