The team that prepares the most-impressive Southern-inspired menu for a sorority's anniversary party wins a trip to Las Vegas; both teams struggle with communication during dinner service.

One finalist's journey will come to an end as America's vote is revealed LIVE.

The loss of Sheldon's idol Professor Proton provokes feelings that Sheldon cannot seem to process. Leonard enjoys torturing Penny about their numerous marriage proposals while Amy and Bernadette decide to make a surprise to help celebrate "Star Wars Day".

When Tyler turns up at the Salvatore house with the news that Markos' plan to break the witches' curse puts Stefan and Elena in imminent danger, Damon suggests they hide out in the remote cabin once owned by Caroline's father. Once there, it becomes obvious to Caroline that Stefan and Elena are keeping a secret, so Damon comes up with a parlor game designed to expose the truth. A ghostly presence at the cabin uses violence and fire to make itself known. Meanwhile, Matt takes charge of Tyler's plan to get information from one of the Travelers, and Bonnie continues to keep the truth about the Other Side from Jeremy, despite warnings from Grams.

When Tom proudly tells the family he's dating a much younger woman, Nathan goes undercover to spy on him and make sure his father isn't being scammed by a gold digger.

Mary enlists a mercenary to help her, which forces her to realize there are sacrifices and lives she is willing to risk to save her country. Francis embraces his role as Dauphin to lead France in a brutal battle against England, and finds a new ally in Leith. Meanwhile, as Lola grows closer to Lord Julien, she gets increasingly suspicious that he is going to betray her.

George and Mackenzie's bickering over Harper attending private school reminds them why they got a divorce.

Cristina looks to Meredith for advice as she assesses her future at the hospital. Derek and Amelia work together on a difficult surgery involving conjoined twins. Meanwhile, Jo is spread too thin when she tries to work on several cases at once and Stephanie realizes the truth about Bailey's bubble boy case.

Alan's girlfriend, Gretchen, insists he confess his true identity to Larry. Meanwhile, Walden goes on a road trip with Jenny and Barry to see his first car.

Step up to the plate with the Pawn Stars when a Bible that belonged to Mickey Mantle throws Corey a curveball. Believed to be from a rehab visit, will the Bible be a revelation or make a quick exodus out of the shop? Then, Rick is intrigued when a customer brings in a pen President Lyndon B. Johnson used to sign Medicare into law. Will he sign on the dotted line or will the price be too painful? And later, the guys start a competition that tests their buying skills. Can Rick become the biggest dealmaker in the shop or will Corey and Chumlee turn him into a sore loser?

Harry conquers a dating obstacle that brings Rose?'s insecurities to the fore; at the same time, Michelle and Billy find themselves drawn into Zoey's war on sugar.

In an effort to have Rachel more engaged in school and take her future seriously, Jack gets her a spot on the wrestling team, much to the chagrin of the wrestling coach. Meanwhile, Joanne realizes that Frankie is now too embarrassed to be seen with her during their annual mother-son trip.

Meredith sets her sights on dating her student Bronwen's wealthy father, but hits a roadblock when Bronwen won't give her permission to go out with him.

Paint the town red with the Pawn Stars when a Monet landscape brushes into the shop. Will the artwork make a bad impression on Rick or will this picture be worth a million dollars? Then, Corey feels the heat when a customer brings in an old firefighter station. Can he douse this customer's expectations or will he get burned? And later, when Rick's history lesson on Cinco de Mayo drives the guys loco, Rick may be uninvited to his own fiesta.

Charlie sleeps with the girlfriend of a violent prisoner in his clinic, only to find out that the prisoner is being released the next day.

Dr. Black's team of fourth year medical students try to determine why a young nanny is suffering from hallucinations of her head exploding. Will and Catherine struggle to get their relationship back on track after she reveals that she cheated on him during a manic episode. After the chief of neurosurgery suffers a seizure during surgery, the Cube's medical director calls a meeting to announce that any doctors suffering from medical conditions that could harm patients must come forward.

Forrest becomes deeply invested in a new job that he's obligated to quit, lives a day as if it's his last and receives an ultimatum from Suzanne while pretending to be Irish.

Theresa has a brush with death on the job and resolves to join the FBI in Washington. When Johnny proposes marriage to keep her in Chicago, they must overcome a series of catastrophes and mishaps to get to the altar.

Portlandia gets away for the weekend to New Beavertown, Oregon. Toni and Candace lead a feminist retreat for women. Kath and Dave do their best to relax. Peter and Nance go on a walking tour of the town. Guest starring Jason Sudeikis and k.d.lang.

Business becomes personal for Sherlock when he is forced to partner with his estranged brother, Mycroft, to solve a case with life-or-death consequences.

Angie and Flynn investigate a kitchen explosion; Angie shares the truth about her past and that of Sgt. Cross.

Ragnar and King Horik return to Kattegat; Ragnar places his trust in those who have stood by him.

David Spade

Martin Short, Kelis

Saul Williams

Tonight Jimmy's guests are actor Andrew Garfield and actress Mary Lynn Rajskub. Musical guest will be Scottish electronic music band Chvrches.

Louis C.K., Amy Sedaris, a performance by the Broadway cast of "Rocky"

3 celebrity contestants compete to determine who has the funniest take on the day's pop culture.

Seth was joined by Kiefer Sutherland, Rose Byrne and Richard Ayoade.

Cheryl Hines, Rampage Jackson

The popular news quiz, with team captains Paul Merton and Ian Hislop, guest host Jack Dee and guest panellists Charlie Brooker and Bridget Christie.

It's an all-singing, all-dancing X-Men spectacular on Graham's sofa as Aussie hunk Hugh Jackman meets Irish heart-throb Michael Fassbender and smouldering Scot James McAvoy. With music from Eurovision hopeful Molly, who performs Children of the Universe.