surveillance tape. they never visited the victim's mother in the hospital. the case was just allowed to die on the vine and it remained an unsolved homicide for seven years. >> and what role did dennis walsh play in all this? >> well, dennis walsh has a couple of roles in the case. back in, ten years ago when the case happened, he was a lieutenant working the police district where the crime occurred that evening. we're not quite sure whether he was on duty or not. the police have never said that. but then when the case was re-investigated following our investigation three years ago, mr. walsh had become lieutenant overseeing all the detectives on the north side of the city. he is involved in several missing files in this case that disappear and reappear, and finally it turned out that he had taken some of those files to his house.