Gray Man, Paperback Book, By: Mark Greaney

There had only been one period in the past sixteen years where Kurt wasn't a killer, wasn't a spy, or a shadowy figure moving in and out of the scene. "Two years earlier, and for less than two months, Fitzroy had appointed the Gray Man to a job quite distinct from anything else on his CV: 'Kurt took up a position of close personal protection for Sir Donald's two granddaughters.' Gentry, the world's most powerful hitman, faces a tight time frame and an army of hitmen who block his way to Paris to eliminate him before he reaches the detention centre of two young girls. He struggles with gunfire, severe injuries, and his near-death to prove that the legend of the Gray Man. Real, nothing stands in his way, and no barriers prevent him.