Blood Covenant

When a respected doctor is found drained of blood in an abandoned castle, Captain Serena is pulled into a case that seems ripped from a vampire legend. But as more bodies appear and the clues lead from stolen research to a secret buried nine years in the past, he and forensic chief Julian Carter begin to uncover something far more terrifying than myth. In a city obsessed with blood, darkness, and deception, the real monster may not be the one hiding in the shadows—but the one who has been walking among them all along.