Infernal God by Elizabeth Briggs

I'm the only one who can save the devil from himself.

Lucifer broke the curse. He unlocked my true self. Then he sacrificed everything to protect our family. I'm going to save him somehow...even if I have to kill him.

The apocalypse is imminent. Pestilence and War have been freed. Famine is coming, and Death will soon follow.

But I'm the Demon Queen, and there will be Heaven and Hell to pay before I let our enemies win.

Hannah and Lucifer's story reaches an epic conclusion in the final book in the Claimed By Lucifer trilogy!