House goes through detox, hoping to stop the hallucinations that tormented him; Dr. Nolan refuses to sign the paperwork to reinstate House's license until House participates in his own mental recovery.
House decides to accept treatment from Dr. Nolan in order to get his license reinstated.
When the enlisted son of a preacher, who was a colonel, is found dead, the team thinks he may be the victim of a hate crime; Gibbs' father visits for the holidays.
When Brick's teachers determine that he is socially challenged, Mike involves him in various activities, eventually settling on the block-party lawn-mower contest.