A legendary and retired police chief lies in a New York hospital bed, visited by two strangers: the first is ex-cop-turned-PI Mike Hammer, whose life was saved more than once by the old man. To the detective, the chief gives a mysterious key. The second visitor murders the chief, mere days before he would have died from natural causes. Someone is trying to tie up loose ends, and Mike Hammer is the only one with the evidence and calculation to ferret him or her out.