Vacation Under the Volcano (Magic Tree House, No. 13)

In their first adventure as Master Librarians, Jack and Annie go to the<br>city of Pompeii to bring back an ancient story that is in danger of being lost<br>forever. Little do they know they are saving the myth of Hercules! But before<br>they can find it, the town's volcano erupts in a mighty explosion. Just when<br>things look hopeless, Jack and Annie get some unexpected help from a certain<br>mythic hero - and the rest, as they say, is history.