Chloe Quinn has endured enough terrible dates to know that romance is probably a punishment invented by someone with a sense of humor.

Summoning a demon after too much wine is meant to be a joke.
Unfortunately, Hell answers.

Caius Asmodeus offers her a bargain unlike anything Chloe expected: seven nights, seven demons, and one wish if she completes every date without surrendering herself to the temptations waiting below. Caius assures her the rules are simple, although the ruler of Hell has never been particularly interested in fairness when something catches his attention.

At first, Chloe is entertainment, then she becomes a fascination he cannot quite explain.

As each encounter draws her deeper into the seductive hierarchy of New Hell, Chloe begins discovering that Caius has been shaping the game from the beginning, choosing her temptations, watching every reaction, and growing increasingly unwilling to let another demon claim what he has started to consider his.

When the seventh night finally ends, Chloe does something Caius never prepared for.
She wins and the contract is fulfilled, her wish is hers, and the gates of Hell are open.

She can leave.
Instead, Chloe chooses him.

Staying beside Caius means entering a kingdom built on old rivalries, dangerous loyalties, and rules written long before a mortal woman ever sat near its throne. As Caius draws her deeper into his world and gives her a voice in the new empire he is creating, Chloe becomes the one thing his enemies never expected him to possess: something worth protecting.

Amara once helped him conquer Hell.
Dante helped build the alliances that put him on the throne.
Neither intends to watch centuries of power bend around a mortal queen without asking what Caius has become.

Chloe entered Hell because of a drunken joke.
She remains because she chose its king.

And before the demons surrounding his throne understand what happened, Caius has already decided that the woman they consider his greatest weakness will wear a crown of her own.

Love may be dangerous in Hell, but power becomes far more dangerous when it has something to lose.