Dire Blood (Descent #5)

Elise Kavanagh died while killing the mother of all demons, and her fight should be over. But nothing is ever that easy where the Godslayer is concerned. Elise has been resurrected--and she came back as a demon.

Now the most powerful witch in the world, James Faulkner, has been dragged to Hell and accused of violating an ancient treaty. The punishment is eternity in Hellfire. Elise is the only one who can save him. But it means following him into Hell to face inhuman urges, the secrets in her past, and the horror in her future.

The Godslayer's fight isn't over yet. It's only just beginning...