Lupo and Bernard investigate the death of 12 year-old Eric Foley and his housekeeper both of whom were shot in the Foleys home in the middle of the afternoon. Eric's parents were university researchers both working that day. Several people saw a man leaving the house and the police learn that a science journalist, Ned Lasky, had been pestering them for information on their medical research. In fact Lasky is a magazine fact checker looking for a break but when a poison pen note with a lock of her dead son's hair is sent to Joyce Foley, it's traced back to Lasky. He clearly has a thing about the Foleys but it's his antipathy towards Joyce's college sorority that seems to be behind his irrational crimes
—garykmcd