i tried to pull away from-- from brad oborn. know, when kids get something in their head, the more you try, the further they get away from you. dennis murphy: hannah's friends saw things they didn't like about brad, too. i probably told her she was better than that and she could do better and he wasn't get for her. dennis murphy: and when they met him, police were struck by brad's demeanor. before hannah's car had been found, washington lacy, a police officer at the time, was pulling weekend duty when again into the station walked a fuming teenager demanding to know what was being done to find his missing girlfriend. first impression, didn't like him. he was, uh-- he just was abrasive. dennis murphy: brad's attitude wasn't the only thing to catch the officer's eye. right away noticed some scratches on him, and that-- we kind of raised our eyebrows at that. dennis murphy: lieutenant hughes was on duty that weekend, too. he made note of the angry boyfriend with the scratches. he's got physical injuries. he's coming on like a house