Nothing Left to Lose by Dan Wells, 335 pages

Hi. My name is John Cleaver, and I hunt monsters. I used to do it alone, and then for a while I did it with a team of government specialists, and then the monsters found us and killed almost everyone, and now I hunt them alone again.

This is my story.
In this thrilling installment in the John Wayne Cleaver series, Dan Wells brings his beloved antihero into a final confrontation with the Withered. Nothing Left to Lose is a conclusion that is both completely compelling and completely unexpected.

This was a really dark but really well-done series. If you liked Dexter, this is a must read.