Reese, having located Cleo's treetop star, taps on his father's back and interrupts the kiss. Delighted, Cleo and Peter stand up, the latter hoisting Reese high so he can set the star atop the fir. Cleo pecks Reese on the cheek, and they have a nice family moment.
At County General, Randi appears, anxious to fill that last nagging blank space on her acting CV. "I'm working New Year's Eve?" she complains. "I don't think so." Dr. Mark "Rachel Got Run Over By a Reindeer" Greene aptly notes that someone has to work on Dec. 31. "Someone else," sasses Randi. And then she's gone, back through the eternally revolving door of supporting characters. Send our best wishes to Lydia and Yosh.
Mark gets distracted by a gunshot victim coming in from the ambulance bay. The frantic mother squeaks out the typical plea for Mark to save her son's life, as though Mark's going to send her kid to die in a corner unless his mother asks very nicely for competent care. Don't forget the magic word! Mark examines her son, Teddy, and deduces that the bullet crossed his thorax. Teddy's struggling to breathe on one side, and will need a chest tube. "How'd it happen?" Mark asks. "I shot him," the mother says calmly.
Benton spots Roger in the hospital waiting room, and curiously goes to meet him. "I guess I should say congratulations," Roger grieves. "Did you really get a new job?" Peter can't believe Roger wants to call him a liar again; Roger can't figure out why Peter is working on Christmas Eve. "It's my last shift," Benton says, defensively. "What's your excuse?" Roger hands him two presents for Reese. He turns to leave, empty and alone. Benton, warmed by the glow of the season and lulled into placidity by the call of other acting projects, offers to let Roger come over tomorrow and give Reese the gifts himself. Roger, the poor shlub, looks tickled. He thanks Peter warmly. "I'm not doing it for you," Peter zings. As Roger leaves for good this time, Benton gets paged to the ER.
Haleh, Mark, and Susan pick at Teddy's dying body. The mother explains that they live in a dangerous neighborhood; she put her tree by the window, heard glass break, and thought a burglar had entered. She fired a shot, then discovered that Teddy had just gotten up out of bed to ogle the tree, and broke an ornament. Guns are bad, mmmkay? As Benton arrives, Teddy's heart rate plummets, and then his pulse disappears altogether. Susan begins compressions. Benton calls for a thoracotomy tray. "We have to open his chest," he explains. The mother watches. Leave, woman. There's no way you need to see this.