John Keller is everyone's favorite hit man: a new kind of hero for a new, uncertain age. He's cool. Reliable. A real pro: the hit man's hit man. The inconvenient wife, the aging sports star, the business partner, the retiree with a substantial legacy. He's taken care of them all, quietly and efficiently. Keller's got a code of honor, though he'd never call it that. And he keeps the job strictly business. But while Keller might be a pragmatic and crack assassin, he's also prone to doubts and loneliness just like everybody else. There was a psychotherapist once. A dog. Even a woman. And though he's got Dot, his wisecracking contact and sometimes confidante, and his precious stamp collection, these days it just doesn't seem to be enough. Keller's been at this business a long while. Just maybe it's time to pack it in and find a nice little house in the desert. Only problem is, retirement takes money. And to get money, he's got to go to work...