Read by Mary Pope Osborne
Written by Mary Pope Osborne

This is the message that Jack and Annie of Frog Creek, Pennsylvania, get from Morgan le Fay, the magical librarian of Camelot. They know they have to search for one of the four secrets of happiness to help Merlin the magician find joy in his life again. And so they head off in the magic tree house for Florence, Italy, in the early 1500s to spend the day with one of the greatest artists and inventors of all time–Leonardo da Vinci!

Mary Pope Osborne takes young listeners back to the time of the Renaissance, an amazing period when great art and new ideas flourished in Europe and helped change the world.

Audiobook: ISBN 9780739356463 | August 28, 2007 | 6 year and up