What do you do when the monster you fear most lives inside your mind?

I thought I knew survival.

As a scavenger picking through the battlefields in the middle of the endless war between demons and the angelic ephilium, I’d spent my life dodging death, staying invisible, and keeping my sister safe.

Then I took her place on an altar.

My blood was meant to unleash an ancient evil. I was supposed to die screaming inside a ritual circle.

Instead, Syrus, the Demon Lord of Malice, claimed me as his host.

Now I can’t breathe without him in my mind—commanding me, taunting me, tempting me.

And every day his power burns hotter through my veins, until it will finally consume me and tear me apart from the inside out.

There's only one way to survive it. The Lord of Malice offers a bargain:

Souls are arriving corrupted before they reach his domain—twisted, defiled, turned into something they were never meant to be—and someone inside his own realm is behind it. Help him hunt the traitor, and he'll sever the bond before it kills me.

Except somewhere between the treachery in his realm and the secrets buried in mine, the demon who should be my captor becomes my protector. And all too soon his hold on me is the drug I'm terrified I can't survive. Because when I finally learn the truth, I may find something I want even more than my freedom. Perfect for fans of the Nightmare in One Dark Window and dark Hades and Persephone romances, this demon-possession romantasy delivers a shadowy MMC, obsessive tension, and the ultimate forced proximity.