The ex-husband of an Ohio dentist's wife killed in a double murder was arrested on Saturday in the Chicago area, according to court records.Michael David McKee was arrested, police records show. Columbus, Ohio, officials said police responded to a Weinland Park home around 10 a.m. on Dec. 30 and found Spencer Tepe, 37 and Monique Tepe, 39, both dead with gunshot wounds. McKee is Monique's ex-husband.