Monk undergoes hypnotic therapy as treatment for his OCD. After a session, he adopts a more childlike personality. Meanwhile a soon-to-be divorced woman disappears and a murder occurs.
Freddy Rumsen strikes out during a pitch meeting with his team; ever-eager Pete seizes a chance to exploit an opportunity at the office; an old friend is the beneficiary of Don's loyalty; Sara Beth proves to be a welcome ally for Betty.
Col. Tigh attempts to decipher the strange music he is hearing in his head while Baltar's trial comes to a conclusion. Key members of the fleet discover that they may be the Final Five Cylons.
After Will and Grace decide to have a baby together, obstacles pile up before them, including a missing specimen sample and bungled insemination efforts that have them teetering between artificial and natural means – all leading to mis-conceptions. Meanwhile, when Jack considers giving up his show-business aspirations, until he gets some career advice from a "divine" entity – his idol, Cher. Likewise, married Karen is sorely tempted by the romantic tickling of a rich and natty gentleman.
Cigarette Smoking Man returns as Mulder investigates the attempted assassination of a young boy with psychic powers who may be the proof that he has looked for all his life. On his way he encounters many enemies especially in the finale' as his office and every X-File is torched by CSM.
In the aftermath of the bus accident, House struggles with his head injuries and short-term memory loss, and must remember the symptom he saw before one of their own, who was on the bus with House, dies.
A bus accident leaves House with serious head trauma and partial amnesia. He comes to believe that a patient on the bus had a life-threatening disease and struggles to recall who it was, and what they had.
House treats a famous soap opera star when he believes the patient has a serious condition even though there's no evidence indicating that's the case. Meanwhile, Wilson and Amber have their first fight.
House copes with a patient whose symptoms conceal a greater problem, but spends much of his time dodging Cuddy's orders to give performance reviews, and fighting with Amber over who gets to spend more time with Wilson.
House and his team must diagnose a Jewish bride who is taken ill at her wedding. However, House is more interested in analyzing Wilson's relationship with his new girlfriend.
House and his team have to diagnose a case at a distance when a researcher at a South Pole base is taken ill.
A mother's sudden paralysis during a indoor rock-climbing incident leaves her daughter injured, and House's new team looking for a cure. Meanwhile, House organizes his new recruits' Secret Santa gift exchange... with a few twists of his own.
Under Cuddy’s pressure to choose his team, House gives the candidates a case of a former punk rock star who is a drug user. Whoever diagnoses the patient is going to have a future as a member of House’s team.
House treats a magician but comes to believe he's faking illness to cover up his own incompetence. Meanwhile, House pits the fellows against each other in his version of an immunity challenge.
A film crew and the candidates are following around House distracting him while he is trying to diagnose a teenager who suffers from a heart attack prior to a serious plastic surgery.