Michael Mantell

Surprisingly, it’s up to Barney, the consummate bachelor, to set things right when they go wrong on Marshall and Lily’s wedding day.

Things are looking up when the guys get news that 'Queens Boulevard' is getting a wide release. Ari must make a deal with an old adversary to survive threats from the 'Five Families,' and Drama is tense about an important audition, taking his aggression out on anyone and everyone.

Bartlet reluctantly consults the new White House Counsel, Oliver Babish, who is stunned by the legal implications of Bartlet's condition.

Two boys brought in after a fight at school leads Cleo to discover that one of them has been injecting himself with hormones. Hathaway's obstetrics nurse, Abby Lockhart, joins the ER as a third year medical student on an ER rotation. Isabelle Corday (Judy Parfitt) arrives in Chicago as a guest lecturer and meets with her daughter, Elizabeth. Kovac and Hathaway administer to a chronically ill 3-year-old boy. Hathaway proves that his mother intentionally induces the boy's symptoms. Cleo shows Greene that she can play basketball as well as any man.

Condemned man Howard Epps is scheduled to be executed by lethal injection in 32 hours for the murder of 17-year-old April Wright. Epps' attorney, Amy Morton, makes a last-minute appeal to Booth, the man who arrested Epps, to re-examine the case.

The girls pay the price for trying to ignore "A"; a new male arrival changes the status quo; Spencer's father asks her to throw a tennis match.