Jurors in McKinney yesterday convicted 19-year-old Edward Mike Ji of attempted capital murder and deadly conduct. A judge decided the punishment.
Ji's mother testified there's a history of mental illness in her family and that her son, who has behaved oddly since childhood, needed treatment.
Ji was found guilty of shooting then-14-year-old Bryan Chevalier twice when the boy answered the door of his Frisco home.
Ji told police investigators he was playing a game he called "Ding, Dong, Die."
Ji was also convicted of shooting at Peter Reid, a Frisco man who was out walking with his wife.
Ji told police he wanted to become a prolific serial killer and was "hunting" for victims.