Mannion investigates the murder of a man during a Civil War reenactment. While Temple takes the matter personally when one of the suspects turns out to be a big-time racist, it's Noland who, trying to find a connection between him and a man in an old picture, discovers a rivalry between the prime suspect and the victim that dates back to the Civil War days. Meanwhile, Debreno and Regan are out testing a new bait car that almost causes the death of a car thief.

A vision of the Virgin Mary on the side of Mannion's building prompts a thief to distribute his loot to needy neighbors on the street. Mannion searches for the modern-day Robin Hood after he distributes money and stolen goods from the roof of his own building. Meanwhile, Temple continues to deal with the shooting of Lester Richards.