Clay White by Kim Fielding

Someone—or something—is murdering young men in San Francisco. Clay White has been fired from the Bureau of Trans-Species Affairs, but he’s determined to track down the killer. When he comes across a vampire named Marek, Clay assumes he’s caught the perp. But the encounter with Marek turns out to be more complicated than Clay expected, and it forces him to deal with his own troubled past and murky psyche. As Clay discovers, sometimes the truth doesn’t come easy—and the monsters are not who we expect.