The Manhattan Hunt Club | 
pickThis is definitely in my top three favorite John Saul books now. It has a great mix of creepy, tension, and social commentary along with a couple of good twists. Pople hunting people in the tunnels below Manhattan is such a great set up!
pickA group of wealthy Manhattanites decide to take justice into their own hands. Tired of criminals getting away with murder, they start hunting and killing convicted criminals they feel did not get a harsh enough sentence. The criminals are taken into the sewers and set free. Then the hunt starts. When they go after Jeff, a college student falsely convicted of a horrible crime, they get more than they bargained for.
Brought a new book to work to read on my breaks. People hunting people in the sewers of New York.
