Fallen Court by Geneva Lee

One fae prince. One deadly bargain. And a mortal caught between desire and damnation.

Cate thought she knew darkness. As a trauma nurse, she had witnessed the worst of humanity. But nothing—not the blood, the violence, or the despair—could have prepared her for the fae underworld. A realm where beauty is a weapon, desire is a trap, and mortals who stray too far don’t return.
She almost didn’t.
Until Lachlan Gage—shadowed, ruthless, and feared even among his own kind—bound her to him with a deadly bargain. As the prince of New Orleans and ruler of the Nether Court, he is as much a curse as he is salvation. And with the Wild Hunt at his heels and war stirring between the fae courts, even his protection may not be enough to save her.
Because Cate is more than just his reluctant mortal. She is wanted. Coveted. And the prince of the Hallow Court will do anything to claim her.
But something ancient is rising in the dark, warping fae magic into something unnatural and cruel. It has nothing to do with Cate’s past—or so she tells herself. Even though the ring left behind by her mother whispers otherwise.
There is only one thing more dangerous than the fae who would kill for her.
The fae who would die for her.
And Lachlan Gage has never been one to lose.