Gribble, a Brookline Eagle Scout, admitted he stabbed and slashed local nurse Kimberly L. Cates, 42, to death with a knife and nearly killed her daughter, Jaimie, then 11, in the pre-dawn attack, but claimed he was insane at the time and not criminally responsible...Gribble is a high school graduate who grew up a devout Mormon and attended Sunday school at Spader's next-door neighbor's house.