I have to kill a friend, he thought. Friend? Yes, he admitted to himself, Marko had been a good friend and a fine teacher. Where had he gone wrong? Natalia Bogdanova. Yes, that had to be it. A big stink, the way that had happened. How many times had he had dinner with them, how many times had Natalia laughed about her fine, strong, big sons? He shook his head. A fine woman killed by a damned incompetent fool of a surgeon.