At the End of Existence

When investigator Ashton Wilkes walks into a burglary sting turned to the bizarre, he never thinks that the perpetrators might take revenge. But when he finds his house invaded, his family brutally murdered, and his son stolen from him by the thieves that were more than thieves, he finds himself enmeshed in a world in which life means little and only the strongest survive. His lust for revenge against the vampires leads him into the hands of a cult with a devilish leader. He turns all his passion to the eradication of these monsters, until he meets a beautiful, fiery woman who puts a traitorous question in his mind. What truly defines monstrosity?