8/7c - When the association president of a swanky Manhattan condominium tower is murdered with an electrical saw, Detectives Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) find themselves dead-center in a beehive of secrets among its residents -- but a disturbed young nanny draws their attention and prompts them to use Eames as a decoy. Concerns over the building's shoddy construction and suspicious behavior between other owners force the detectives to look behind the marbled facade.

9/8c - Detective Goren (Vincent D'Onofrio) matches wits and moves with a paranoid but murderous chess grandmaster (as David Blum, guest star Robert Carradine) after a newly engaged woman is found slain and tossed in a garbage bin -- but Goren believes the killing might be a case of mistaken identity and finds links to a wealthy family and a pimp. Edging closer, Goren and Detective Eames (Kathryn Erbe) study the passenger manifest on the victim's recent flight and they discover the curious zig-zag path of one disturbed man who is later discovered to be a famous chess prodigy-turned-fugitive now intent on blackmailing his family for money.

8/7c - When an infant suffers breathing trouble and liver failure, House and the team must look at the medical history of the mother in order to find an answer, and ultimately land on a discovery that forces the mother to jeopardize not only her child's health but her own.

9/8c - When a campaign manager falls ill with liver failure and temporary paralysis in the midst of an election race, the team must look to the manager's candidate and his surprising announcement in order to solve the case.

8/7c - Natalie tries to throw a surprise birthday party for Monk while he investigates the mysterious death of an office building's maintenance man.

9/8c - When Sharona returns to San Francisco to handle legal issues related to an uncle's death, Monk suspects foul play and is torn between the differing styles of Sharona and Natalie.