A Walk Among the Tombstones (Matthew Scudder Series #10)

A ruthless, ingenious pair of entrepreneurial monsters is preying on the loved ones of those who live outside the law. Though he has no love for drug dealers and poison peddlers, ex-cop-turned-p.i. Matthew Scudder now must help them put two thrill-kill extortionists out of business—before another drop of innocent blood is spilled.