The investigation of a bride-to-be's murder uncovers a man's double life; a turn in the case rattles Stabler, who turns to his wife and children for comfort. When Dets. Stabler and Benson speak to the girl's grief-stricken parents they discover her fiancée, a CIA agent named Stephen Dashiell, had been threatened by terrorists -- they believe this may have been a professional hit. Their difficult search for Dashiell leads them to a perfect suburban family - and then a tragedy - one that pushes Stabler to face new truths about his own family.