sentences:  The investigation swiftly leads to two likely suspects, Mary Costello and her husband, when Booth sees their new refrigerator and later finds handcuffs in their basement that Brennan suspects may have caused the stress fractures on the victim's wrist.The twist in the tale occurs when Michael is recruited by the defense as an expert witness.The trial boils down to a contest between the cold factual style of Bones and the charming layman approach of Michael.