The Iron Locket (The Risen King, Book 1)
She was raised to hunt faeries. He was raised from the dead.
Aiofe Callaghan comes from a long line of faery hunters. Hired by one of the faery queens, they protect the human world from chaos and destruction. But when Aiofe stumbles through an open door into the land of Faery, she discovers the job isn't as simple as it seems, and neither is she.