Catriona Sullivan never meant to be anyone's epic fate. She's a wandering bartender, thirty‑something, with a knack for tripping over cookie tables and a life she hasn't bothered to plan. When a near‑mythic best man at a wedding stops her heart with a look and then disappears for months, her ordinary loneliness turns into obsession—and into danger.

Jace McFadden is three centuries of regret in a handsome, controlled shell. He has avoided bonds and death for years—until he meets Cat and discovers a truth the Community dare not ignore: she may be his Blood Affinity. But Amanda, a cruel vampire with friends in dark places, claims Cat for a far darker cause. Now, Cat must choose between trust and survival: accept Jace's impossible offer and become what she was never meant to be, or remain human and risk becoming prey.

Dark, sensual, and sharp with humor, Blood Affinity asks one question: if destiny demands everything, what are you willing to lose to keep the person you love alive?