"Revenant Road" by Michael Boatman -- You know Michael Boatman. He played Carter Heywood in Spin City, Stanley Babson in Arli$$, Charlie Phillips in Instant Mom and Julius Cain in the Good Wife. Besides acting, he writes and he is very evily funny when he writes.
Incredibly violent from beginning to end and not for the faint of heart. All the gore set aside, the book is a well written story. The one frustrating point is that there is no explanation of how the whole "change" came to be. Fin 10/5/15.