Law & Order: Trial by Jury S01E07 - Bang & Blame

When a bank worker casually shoots a customer to death and wounds others, the seemingly mentally unstable man runs rings around an exasperated A.D.A. Kibre in court when he asks to defend himself and exploits his claim of extreme emotional distress due to the tragic death of his son. But Kibre and Gaffney must regain their footing before the jury through old-fashioned detective work which reveals critical holes in the murderer's persistent claim that he has been victimized by everyone.