New York hit man Keller is a law unto himself, and when a situation goes awry - which despite his best-laid plans it so often does - he makes some surprising judgement calls to provide a twist in the tale. It's not all drudgery in the life of an assassin. Keller's jobs allow him access to all sorts of sporting events - following a baseball team round the country, providing the insurance for a fixed horse race, attending a basketball game in Indiana and playing golf in Arizona. He even gets to mix his passion for stamp-collecting with a hit on a famous philatelist. Wisely, Keller always travels for his work. New York is home, and he doesn't want to mess on his own doorstep. But the jobs are drying up, and he needs money. So he breaks the rule - and regrets it. His cover is at risk - he is even followed home - and Keller has to use all his remarkable skill to make sure he can continue doing what he does best.