Fortuna Sworn by K.J. Sutton

We were meant to be seductive. We were designed to lure humans in.

Fortuna Sworn is the last Nightmare.

In a world where the supernatural—known as the Fallen—descended from rebel angels, she has survived by staying hidden. Vampires, werewolves, fae... they walk openly now. But Nightmares? They’ve all but vanished.

Two years ago, Fortuna’s brother disappeared without a trace. She’s never stopped searching. When a stranger with eerie, inhuman eyes offers her the one thing she’s been craving—answers—she agrees to a dangerous bargain that pulls her deep into the shadows of the fae realm.

What awaits her there is not just power, court politics, and treacherous magic—but something far more horrifying: the truth.

Darkness is watching her.
The courts want to use her.
And Fortuna is more powerful than anyone realizes.

Perfect for fans of slow-burn romance, morally gray fae, found family, and heroines who bite back, Fortuna Sworn is the first book in a completed dark fantasy romance series that will haunt you long after the last page.