The Tower Chronicles: Dreadstalker #3

Supernatural bounty hunter John Tower has long been a man shrouded in mystery. Now, discover what set him on this path of horror as his origins are finally uncovered, revealing just what Tower is risking his life to find! In the wake of these revelations, Tower's shadowy rival, Martin Castle, uses his considerable power and influence to move a new pawn into the game - a living weapon of mass destruction! Has Tower finally met his match?