Reign Fall (Demon Princess, #3)

It’s been a dangerous ride for Nikki Donovan since she first learned she’s a demon princess. And the ride isn't over yet!

She’s just found out that her best friend is a demon slayer in training, one who doesn’t know that Nikki is exactly the prey she’s sworn to hunt. Nikki’s demon king father has signed her up for lessons on how to master her erratic half-demon powers, and that’s on top of her regular homework! Also, she’s torn between two boys - Rhys, the faery king she’s prophesied to marry, and Michael, a Shadow whom she’s forbidden to love.

To top it all off, a dark force is haunting Nikki, something mysterious and evil that wants the demon princess dead...but who - or what - is it?