SELF-DEFENSE: Okla. Mom Sarah McKinley Kills Intruder Justin Martin. “Sarah McKinley, 18, killed Justin Martin with a single gunshot wound on New Year’s Eve when he forced his way into her Blanchard, Okla. home and came at her with a long hunting knife, ABC News reports. The deadly encounter occurred about a week after the young mom’s husband died of cancer, according to TV station KOCO.”