so mark weinberger was taken back down the mountain to the police barracks in courmayeur. he was in very good shape, very quiet. i asked him, are you married? i'm divorced. what's your job? i'm a surgeon. rob stafford: a surgeon? - surgeon. i'm a surgeon. did he say anything about the charges against-- no, no. rob stafford: while at the police station, weinberger was given a cursory pat-down and offered lunch. colonel di vita: he had food with us at our same table. rob stafford: was he hungry? i think yes. also, because our food here is very, very-- i'm want to say good. rob stafford: according to officers at the table, weinberger seemed to be enjoying himself, until the moment this bizarre story took an unexpected and desperate turn. what can you say about what happened next? we'd better talk about that, please. rob stafford: coming up, mark weinberger had not yet given up on escaping his past. he did not want to go back. there was too much a trail of devastation. i don't think they have any idea of what's going to happen. he pulls a knife out that he has concealed. rob s