Dark Vow by B. B. Hamel

He’s obsessed. And I’m his target.

Calvin Solar is steeped in death. He’s the shadow of bliss and the darkness before pleasure. He comes from a long line of arms dealers, and his whole existence is sin.
And I want him to murder my father.
Getting my old man sent to jail wasn’t enough. I need my abuser dead and gone.
Calvin can make that happen. Except he wants the one thing I don’t want to give him: Me.
Marry Calvin, and all my problems go away. He’ll make sure my father never sees the light of day again, and I’ll have enough money to take care of my grieving mother.
Except Calvin didn’t mention his murderous brothers will do anything to keep me out of their family’s business.
I’ll dive into the underworld to take care of my family.
Even if it means getting torn apart by a gorgeous demon.