In the Underworld, the only thing deadlier than gods and monsters is losing your heart...

When the Coin Sisters kidnapped the Queen of Hell, they unknowingly ignited a power struggle amongst the gods. Heaven wants the Queen for leverage while Hell demands she be returned home. The thieves' only chance to escape the powerful gods pursuing them—and obtain their hefty payout—is to enter the Underworld.

But the Underworld is a lawless land stuck between Heaven and Hell and ruled by the mercurial Fates. To survive, the thieves will have to navigate hideous monsters, dark magic, sinful temptations, and the Fates' cruel games. They'll soon learn that their downfall may not come from the gods and monsters pursuing them, but from the forbidden passions that find them.