Agent Seventeen by John Brownlow .. A contract killer named 17, sixteen killers came before him, and his days may be numbered.
(I actually read an excerpt from the follow up Assassin Eighteen, Purchased that, raced to the library with five minutes before close to get 17.
I have 50 pages left and will start the new tonight but I am loving it so far. He is from the UK, I am in Australia so I assume his books have been released in America as well.
Purchased the new Lee Child too, will read that after this one and then John Grisham's sequel to The Firm, he certainly waited a while to get to that one.