The Sinner

Syn is a cold-blooded mercenary hiding his lethal side hustle from his brothers in arms. When he rescues Jo Early during her dangerous transition into a vampire, he finds himself caught between his dark secrets and an intense connection with a woman who doesn't know her own nature. As an ancient war reaches a breaking point, Syn must decide if he can be the ally the Brotherhood needs or if his past will destroy their only chance at survival.