A dog leads two teenagers to the battered body of Travis, a Marine Corps Reserve sergeant in his own backyard in Springfield, Virginia, in the burbs of Washington, DC; Gibbs and company investigate. Travis's wife, a Marine gunny sergeant, and their 6-year-old son, are missing; Tony and Ziva learn of Travis's problems with both his wife and his girlfriend. Ducky and Palmer find disturbing evidence; Gibbs, Tony, McGee, and Ziva find clues and deduce a regrettable history. Predictably, Abby provides much help. At the suggestion of the Duck, Gibbs arranges for Ziva to connect with the widow, but she produces nothing. Another suspect comes back under scrutiny, but that fizzles. Gibbs turns to a bruise and pursues it; he figures out what left it. The gang bust the bad guy.