Everybody's Watching Me — Mickey Spillane

When young Joe Boyle is paid to deliver a note reading Cooley is dead. Now my fine fat louse, I'm going to spill your guts all over your own floor, and signed Vetter, he finds himself in the middle of a murderous rat race. Vetter is a mysterious killer believed to be a friend of Cooley, unknown otherwise except for the fact that he's responsible for the death of many hoodlums.