Pompeii: City on Fire (Lost Cities, #1)

Pleasure-seeking Romans find the seaside town of Pompeii the perfect gateway. But when the rich patrician Cato escapes Rome, intent on a life of leisure, he is unprepared for the hostility he encounters. In the same place, but at the opposite end of society, Ariella has disguised herself as a young boy to be sold into a gladiator troupe. Survival is her only ambition.
But evil creeps through the streets of Pompeii, and neither Ariella's secret nor Cato's evasion is immune to it. Political corruption, religious persecution, and family peril threaten to destroy them, even before an ominous mountain in the distance spews its fire.
As Vesuvius churns with deadly intent, Cato and Ariella must bridge their differences to save the lives of those they love--before the fiery ash buries Pompeii, leaving the city lost to the world.