At the beginning of the episode, the as-yet unknown killer snaps off a car antenna to use to assault and then kill his victim with. The close-in shot shows that the killer's arm is bare out to at least his elbow.
But when the true identity of the killer is revealed in flashback, the viewing audience is shown that the killer was wearing not only a suit jacket but a form-fitting long-sleeved white shirt at the time of the murder.
But when the true identity of the killer is revealed in flashback, the viewing audience is shown that the killer was wearing not only a suit jacket but a form-fitting long-sleeved white shirt at the time of the murder.