In their first adventure as Master Librarians, Jack and Annie go to the city of Pompeii to bring back an ancient story that is in danger of being lost forever. Little do they know they are saving the myth of Hercules! But before they can find it, the town's volcano erupts in a mighty explosion. Just when things look hopeless, Jack and Annie get some unexpected help from a certain mythic hero - and the rest, as they say, is history.
"I'm one of those very lucky people who absolutely loves what they do for a living. There is no career better suited to my eccentricities, strengths, and passions than that of a children's book author."--Mary Pope Osborne
Mary Pope Osborne is the author of the popular Magic Tree House series. She works with her husband Will and her sister Natalie on the nonfiction companion series, Magic Tree House Research Guides. Many of her books have been named to best-books lists.





