A Johnson City Teen Accused Of Killing His Mother And Sexually Abusing Her Dead Body Has Turned 18 Years Old And Has Been Moved To Protective Custody At A Local Jail. Codey Miller Is Charged With First Degree Murder, Felony Murder, And Abuse Of A Corpse. He’s Accused Of Killing His Mother, Sherry Cooper In May Of Last Year. He’s Scheduled To Appear In Juvenile Court Today. Meanwhile, Miller’s Co-Defendant In The Case, 37 Year Old Christopher Johnson Of Memphis Faces The Same Charges And Is Scheduled To Appear In Washington County Criminal Court Today.