Monday with a Mad Genius

Monday with a Mad GeniusBy: Mary Pope Osborne Illustrator: Sal Murdocca Series: Magic Tree House Merlin Mission 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 to save Merlin from his sorrows! The brother and sister team travel back in the magic tree house to the period known as the Renaissance. This time, Jack and Annie will need more than a research book and a

By: Mary Pope Osborne | Illustrator:  Sal Murdocca | Series: Magic Tree House Merlin Mission 

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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 to save Merlin from his sorrows! The brother-and-sister team travel back in the magic tree house to the period known as the Renaissance. This time, Jack and Annie will need more than a research book and a magic wand. They'll need help from one of the greatest minds of all time. What will they learn from Leonardo da Vinci?

Formerly numbered as Magic Tree House #38, the title of this book is now Magic Tree House Merlin Mission #10: Monday with a Mad Genius.

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