House and the team treat a teenager who collapsed during her high-school Christmas program; Foreman and Thirteen's relationship progresses; Cuddy receives an unexpected gift.
Donny Crane returns as opposing counsel on one of Denny's cases, where a woman is suing her former boyfriend for saying no at the altar.
A man reports that his son is being held for ransom; Sipowicz and Clark have a disagreement; a young woman is found murdered in the closet of her apartment; Clark's past with one of the women involved threatens his testimony in a trial.
