Hit Man (Unabridged‪)‬

Keller possesses all the qualities of a professional killer. He's cool, confident, reclusive, icy, and ruthlessly efficient. But this seasoned hit man is also prone to self-doubt as he finds himself caught in the clutches of a mid-life crisis. Between contracts, he learns a few crucial truths about himself and the ways of the world he's become detached from, and winds up a wiser - if not better - man.