A past mission comes back to haunt Ed when he realizes the sniper that has taken over City Hall is the son of a gunman he killed on a mission several years before. The team tries to stay a step ahead of the gunman who, during the Croatian civil war, became an expert sniper before the age of 16. With revenge on his mind, it becomes clear that Ed is the sniper's target. Sam and Jules struggle with tellling the team about their relationship as it becomes tested when Jules gets in the way of the sniper's mission.