Keller is a regular guy. He goes to the movies, collects stamps, serves jury duty. Then every so often he gets a call, packs his bags, and kills a perfect stranger. But lately the jobs have started to go wrong. And then he realizes...someone out there is trying to hit the hit man.

Keller is a killer. Professional, cool, confident, competent, reliable. The consummate pro. The hit man's hit man.

But he is a complex person: understandably guarded and reclusive, icy and ruthlessly efficient, he is also prone to loneliness, self-doubt, and career worries. Keller may be a crack assassin, but he is also an all-too-human being.