Archer and Lana pose as newlyweds to stop a sale of enriched uranium.

Olivia Colman and David Tennant discuss the strange relationship of their characters.

Olivia Colman and David Tennant discuss the on-set secrecy surrounding who killed Danny Latimer.

Dean Pelton asks the study group to help secure a grant for research into Chang's memory loss, while Abed films their efforts for a documentary.

Joan investigates her first solo case when a wife disappears. The missing woman left behind a tear-filled video that mentions a murder on a subway platform. While Joan searches for the vanished lady, Sherlock probes the murder.

Open with the kids addressing the recent awkwardness between Will and Finn. And the two Glee leaders are given an assignment: the two must perform a song together using the theme of feuds. Blaine and Sue will have a sing-off, while Ryder has a scary story coming.

The discord and chaos created by the hospital's new management team causes one physician to question his future at Seattle Grace. Meanwhile, the doctors and the interns must juggle several transplant surgeries at once, each coming with its own set of obstacles.

From "Olympus Has Fallen", actor Gerard Butler; musical guest Elizabeth Cook

Leslie is determined to help a local video store stay in business. Chris offers Tom advice on how to deal with a difficult employee. Ann resorts to blackmail to get April to be her friend.

Finch and Reese head to Atlantic City to protect the latest person of interest, an elderly gambler; Carter tries to clear another detective's name.

Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.

From "Parenthood", actress Monica Potter; sports radio host Jim Rome.

The adventures of Dwight at his family beet farm and bed-and-breakfast come to light. Here, he and his siblings receive a surprise inheritance. Back at the office, Todd Packer tries to atone for a lifetime of boorish behavior.

Elena’s new outlook has everyone concerned, leading Stefan and Damon to agree that going back to the normal routine of high school would be the best thing for her. Caroline is pleasantly surprised when Elena decides to rejoin the cheerleading squad, but her pleasure turns to shock when Elena’s behavior proves dangerous. Not giving up on their search for the cure, Damon and Rebekah work together until his unwanted advice catches her off-guard. Klaus tries to use Hayley to get the information he’s after and makes an intriguing discovery in the process. Meanwhile, a bored Elena throws a wild party and gets into an ugly fight.