The Wrong Quarry

Quarry doesn't kill just anybody these days. He restricts himself to targeting other hitmen, availing his clients of two services: eliminating the assassins, and finding out who hired them...and then removing that problem as well. So far he's rid of the world of nobody who would be missed. But this time he finds himself zeroing in on the grieving family of a missing cheerleader. Is this the right quarry?