according to "vanity fair" writer buzz bissinger, he cut away people from the past, anyone who knew hishe cool detachment of a surgeon. >> i think it's i'm rejecting everything i had in the past. maybe you don't like your wife or maybe you do. he leaves in september of 2004. never, ever contacts her again. he's got a brother neil who he's very close to. never, ever contacts him again. so that's what we're dealing with. >> it must have been exhilarating at first, using fake names and covering your tracks like a character in some spy novel. but in all pulp fiction stories, there comes a time and place where a woman enters the story and carefully wrought plans begin to crumble. for the man calling himself mark stern, the place was courmayeur, and the woman in question had a past as intriguing as his own. >> i saw him in my market. >> a customer. >> yeah. he came to bring milk, bananas, some cheese. >> he was buying milk, banana, cheese from you. >> yeah. >> monica spaconi, a transsexual who says the man who walked into her store bought groceries from her more than two times in the winter o