The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!

Jack and Annie are on a mission for Merlin the magician! This time, the magic tree house whisks them off to Thebes, Egypt, to find Florence Nightingale, a world-famous nurse. But when they find her, the Florence Nightingale they meet is not a famous nurse at all—she’s not even a regular nurse! Have they found the right person? Or did Merlin make a mistake? An easy mission turns dangerous when Jack and Annie try to solve the mystery!

Formerly numbered as Magic Tree House #51, the title of this book is now Magic Tree House Merlin Mission #23: High Time for Heroes.

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

About the Author

MARY POPE OSBORNE is the author of the New York Times number one bestselling Magic Tree House series as well as co-author of the Magic Tree House Fact Tracker series, along with her husband, Will, and her sister Natalie Pope Boyce.

SAL MURDOCCA has illustrated over 200 children’s trade and textbooks. He teaches children’s illustration at Parsons School of Design in New York City.

"About this title" may belong to another edition of this title.

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