Death Dealer by Ashley Robertson

Death: a word Mia Baron knew too well since the murder of her parents. Her drive for vengeance was why she became a Death Dealer, signing her life away in her own blood. Deacon Gage craves justice for his own horrific tragedy that forced him into the same life as Mia. A new job threatens to destroy her and he realizes he’s the only one who can save her…at a price that might be too much to pay.