Blood Pact - Sebastian Winter, #2

They thought they kept the nightmare caged with blood. They were wrong. Sebastian Winter's world explodes when he uncovers a dark secret... ...a pact fueled by human sacrifice holding back an ancient, slumbering evil. Now, the pact is broken. The entity awakens, hungry and enraged. Sebastian races against time to stop it before a city bleeds dry... ...but can he navigate the web of lies and hidden agendas of those who made the deal in the first place? Blood Pact is the second book in the Sebastian Winter series. He's not your run-of-the-mill hunter or slayer.
He doesn't hunt down monsters because of what they are. He only takes out the guilty. But not all hunters see things the same way...