Before an ambush by enemy soldiers, Lord Cassia was an engineer's apprentice on a mission entrusted by the king. When plague sweeps over the land, devastating the kingdom, even Cas's title cannot save him from a rotting prison cell and a merciless sickness. Three years later he wants only to return to his home in the mountains and forget past horrors. But his castle has become a refuge for the royal court... and they have brought their enemies with...

In his second adventure, eleven-year-old Gregor returns to the world beneath New York City to rescue his kidnapped sister, Boots, and fulfill a prophecy that will restore peace to the people, bats, rats, cockroaches, and spiders who populate the underworld.