Dead Man Stalking by T.A. Moore

Agent Luke Bennett proved that humans could rise just as high in the ranks as their vampire colleagues—until a kidnapper held him captive for a year and turned him without his consent.

Now he’s Took: a reluctant monster afraid to bite anyone, broke, and about to be discharged from his elite BITERs unit.

When an old colleague suggests he consult on a BITERs case, Took has little to lose. The case is open and shut… but nothing is ever that easy. As he digs deeper, he discovers a lot more than one cold case is at stake, and if he wants to solve this one, he’ll need the help of the BITERs team. Even if that brings his old commander, Madoc, back into his life.