courtney copeland was larger- than-life , gifted salesman and caring son be loved by everyone who knew him, then one night, he was shot while sitting in his car. desperate for help, courtney sped straight to the police. what they did and did not do would launch a mother's unrelenting quest for answers. here is josh mankiewicz with "the story of somebody." >> sometimes it is a sound that brings it all back. the thump of a basketball on a rim or backboard. that is when shapearl wells can almost see him again. her son and his friends playing ball late into the night . his name was courtney, but on the court, he was hard work 34, a left-hander who could shoot with either hand. her son, who bounced through life, dancing with the dog and his sisters. singing in his car, his joy made anything seem possible. sometimes, those memories help his mom, shapearl , forget the horror of what came next, and the person she had to become. do you have any experience been an investigator? >> no, not at all. i am a mom on a mission. the last thing that his mom can do is go and find out who did this to him.