It's the summer of AD 79, and Flavia Gemina, the sea captain's daughter - along with her friends Jonathan the Jewish boy, Nubia the African slave-girl, and Lupus the homeless beggar-boy - set sail for the Bay of Naples, to stay with Flavia's uncle near Pompeii. They are soon absorbing in trying to solve a riddle that may lead to treasure.

But then tragedy strikes - Mount Vesuvius erupts and the children are fleeing for their lives from one of the worst natural disasters ever recorded. Not just a mystery - this is an absolutely thrilling action adventure that makes you feel you were there!