Darren Capozzi

The guys are invited to a wedding of a mutual friend. Nick, fearful he will run into his ex-girlfriend Caroline (guest star Mary Elizabeth Ellis), asks Jess to be his date. Meanwhile, Winston takes his role as an usher very seriously and gets competitive on the dance floor with a young guest. Schmidt not only catches the eye of a beautiful woman (guest star Katie Cassidy), but also his “frenemy” Gretchen (guest star Natasha Lyonne) whom he sleeps with at every wedding reception.

Monk goes up against a Bobby Fisher-type chess genius suspected of killing his wife, who always appears to be two steps ahead of Monk. David Strathairn guest stars.

Don and Charlie discover a buried secret that will change the FBI team forever, on the third season finale. A mysterious man takes control of a bridge and demands to speak with the Eppes brothers. In the wake of an explosive standoff, the brothers discover the man was a former spy who was poisoned in an effort to keep him from exposing a big secret; he created a master list of spies and traitors from numerous countries and if it's exposed it has the potential to tear apart national security. As Charlie and the FBI try to crack the various codes the spy left behind, they uncover a shocking secret within their own team.

Will gets an invitation to a pool party hosted by Lil Jon, but has already committed to watching Marcus; Fiona learns telling the truth isn't always the best way to get a job.

Jake and Claire decide to leave the comfort of their cozy bed for a wild night out as Cooper performs an intimate concert to debut new music.