Season 6: Episode 12 - Golden Hammer

Golden Hammer: Jane and the team investigate the murder of Charles Whitaker, a high tech cartographer who had been consulting for the Pentagon. Someone dosed Whitaker with a lethal cocktail of drugs that caused his heart to fail after a severe psychotic episode. When Jane uncovers a coded message in a newspaper in Whitaker’s house, he begins suspecting that their victim may have uncovered a spy ring before his death. Meanwhile, Jane and Lisbon learn that someone is stalking and killing former CBI members.