Deviant-Hunter's Sabbath - Eve of Light: Deviant-Hunter, #3

Frank Sanders has spilled a lot of blood over the years. He is neither proud nor apologetic. The human population is under assault, engaged in a near-invisible war of which few are even aware. As a single father raising a young daughter in a world where viral terrorists with supernatural abilities are ascendant, he has had no choice but to make sacrifices-anything and everything to make the world a brighter place for his only child.
He has always assumed one day he'd have to make the ultimate sacrifice. But when that dark day finally comes, what he is called to do is far more dreadful than anything he's ever imagined. A gritty Dark Metaphysical Fantasy.