The State of New York (plaintiff) charged Walter White (defendant) with killing his wife in their apartment, wrapping her body in a bedspread, and placing the body in a closet until it was found at week later. At trial, White testified that he had a violent and emotionally abusive relationship with his wife. White said his wife repeatedly humiliated and emotionally abused him over the course of several weeks. At the close of the evidence, White requested a jury instruction on the affirmative defense of extreme emotional disturbance. The trial court denied White’s request. The jury convicted White, and he appealed. The appellate court affirmed and held that the trial court did not err in refusing to instruct the jury on extreme emotional disturbance. The Court of Appeals of New York granted certiorari.