William Duffy

Series premiere. Suburban wife and mother Cathy continues to juggle the demands of her everyday life even after she receives a devastating medical diagnosis. Also available on VUDU

After answering questions from White House Counsel Oliver Babish (recurring guest star OLIVER PLATT), Toby concludes that he needs to retain counsel. Meanwhile, Josh realizes that everyone involved in the Santos campaign is young and inexperienced, forcing him to make some tough decisions. Also available on iTunes and VUDU

On Valentine's Day, an Iranian fighter jet accidentally shoots down a British passenger plane--killing 100 people--but C.J. is reluctant to awaken the President even as the hawkish British prime minister considers bombing Iran's nuclear reactors in retaliation. After learning that the passenger jet was mistaken for a U.S. spy plane, Bartlet consults with British ambassador Lord John Marbury (recurring guest star ROGER REES - 'Cheers'), and they debate whether a strike is the perfect excuse to destroy the atomic sites or if it would set back reform movements in Iran. Meanwhile, Abbey and C.J. feud over the President's schedule for total rest; Toby and a legal professor try to write a new democratic constitution with representatives of Belarus; and everyone keeps dodging the traditional White House appointment with Miss Universe. CHRISTOPHER LLOYD ('Taxi,' 'Back to the Future' films) guest stars as law professor Lawrence Lessig. Also available on iTunes and VUDU

On the eve of the President's controversial trade summit meeting in Brussels, Josh is troubled when he learns that Bartlet will reverse his position concerning the loss of American jobs to foreign nations. C.J. is frustrated with a new Federal Communications Commission ruling allowing multimedia companies increased ownership of TV stations. Meanwhile, the administration tries to downplay job-loss statistics, and Donna tells Josh about her dissatisfaction with her limited role on his staff. During all of this, Bartlet meets Kate Harper (recurring guest star MARY McCORMACK - 'K Street,' 'Private Parts'), the brash, new deputy national security advisor. Also available on iTunes and VUDU