Monday with a Mad Genius

JACK AND ANNIE are on a mission to save Merlin from his sorrows! Charged with finding the second of four secrets of happiness, 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?

• Author
• Mary Pope Osborne, Salvatore Murdocca

• Format
• hardcover

• Pages
• 110

• Series
• Magic Tree House

• Publisher
• Random House

• Language
• english

• ISBN
• 9780375837296

• Characters
• Annie and Jack

• Settings
• Florence, Frog Creek, Pennsylvania

• Genres
• fantasy, childrens, fiction, adventure, juvenile, magic

• Release date
• 2007