It's Christmas Eve and the squad is on duty. Munch and Bolander investigate the death of Nicholas McGibney, a street-side Santa Claus. When they go to the victim's residence, they find his 10-year-old son, Fidel, who's waiting for his dad to come home. Bolander checks with Child Welfare, leaving Munch to deal with the child. Lewis and Russert, meanwhile, spend the evening trying to find a young woman's killer, and Bayliss tries to hustle his colleagues at cards during a quiet night in the squad room.