The grueling semifinals continue as 10 more singers take the stage to perform for the judges. After they perform, the judges will be faced with the tough decision of choosing which five will stay each night and which five will be sent home.

After a terrible date, Koothrappali vows to never leave his apartment. Meanwhile, Penny actually impresses Sheldon with her acting skills.

When Stefan arrives back in Mystic Falls with Elena and Jeremy, Caroline is immediately worried about Elena's state of mind. Stefan reaches out to Dr. Fell and Matt for help. Still on the island, Damon relays somber news to Rebekah, and is surprised at her reaction. Together, Damon and Rebekah learn an unexpected bit of recent history from Vaughn. Everyone is horrified when Bonnie reveals the rest of Shane's plan. Finally, after Damon does his best to help her, Elena comes up with a plan of her own.

In support of Troy and Abed, the study group heads to InspecTiCon - the annual Inspector Spacetime Convention. Trouble begins when the group meets up with Abed's email "pen-pal", Toby Davies, who's shared passion for Inspector Spacetime comes between Abed and Troy. Meanwhile, Annie leaves the convention floor to enjoy the luxuries of the hotel while Jeff relaxes in the bar with Lauren, an Inspector Spacetime fan.

An explosive start to Hank's search for his wife, Laila, brings him and "Beck" to a near-death confrontation with White Vincent, who slips away in the Canadian Tundra. Now faced with more questions than answers - not just about his wife, but about his own existence - the search is on for the next clock. Determined to unlock the next clue in the hope that it will bring him closer to understanding his past and the woman he loves, Hank and Beck set course for India, where Hank is confronted with a bombshell discovery. Meanwhile, Rachel and Arron chase another path, which reveals the final journey of the mysterious Rose Commandant.

When Walden runs into his ex-wife at a high-end singles mixer and they talk about getting back together, Alan worries that she's not good for Walden.

Leslie and Ben have two hours to complete a yearlong project; at the same time, Ron's temper gets him in trouble. Later, Leslie is at a loss for words after the speech she prepared for a special event is stolen. Meanwhile, Ben begins his new job at the Sweetums Charity Foundation; and Ann summons the courage to ask an important question.

As word of Seattle Grace's financial trouble spreads, Catherine encourages Jackson to move to Boston, and the interns fear they might lose their jobs. Meanwhile, the doctors meet with a potential investor in a last-ditch effort to save the hospital, and Alex impresses Jo while caring for a patient.

Leslie is at a loss for words after the speech she prepared for a special event is stolen. Meanwhile, Ben begins his new job at the Sweetums Charity Foundation, and Ann summons the courage to ask an important question.

Reese and Finch try to help a CTU operative, Sam Shaw, who receives her targets' Social Security Numbers through the government. When she learns too much, the government wants her dead... and when Reese and Finch find her, Sam refuses their help.

As yet another surprising turn impacts the teams, the designers are tasked to fashion a performance outfit and a red-carpet look for country artist Miranda Lambert, who is also the guest judge.

After a dinner where Cat introduces Vincent to Heather ends badly, Heather enlists Tess to stage an intervention with Cat. Meanwhile, Evan receives an interesting proposition that could change the course of his cross species investigation and at an event to honor Joe, Heather goes missing and Vincent is forced to make a tough decision that saves her life.

The guys compete to concoct a special sandwich to represent the Stash; and an extremely rare comic book is brought in.

To win a high stakes bet against two hunters from Texas, Troy must get his sons to step up and help him bring in the biggest gator. Two of his boys head into a remote area and snag a monster with a treble hook only to be dragged around the swamp by the massive gator. Meanwhile, when one hunter's gun runs out of bullets, his partner turns to a tiny pocket knife to try and bring down a massive live gator before it attacks the boat.

Charlie dates his daughter, Sam's, teacher.

President Dale Gilchrist's brother Doug stops by the White House, initiating a long-standing rivalry which threatens their relationship and prompts Emily to take on the role of peacemaker. Meanwhile, Becca prepares for an interview and Skip decides to offer his own special version of the White House tour after witnessing one from an official tour guide.

In the Season 2 finale, the pranksters engage in a round of Joker vs. Joker challenges. Later, they read palms and give manicures.

During this episode's Nerd War, Team Orange and Team Blue get nerdy with their bad selves in the world's first Nerd Anthem competition. Then, two nerds show off some serious dancing moves as they go head-to-head in the Nerd-Off.

A snake bites Archer in a special place.

Harvey's vision for the firm's future clashes with Jessica's when a British firm offers a tempting proposition.

Olivia and the team are hired by an up and coming politician, Peter Caldwell, but this time instead of fixing a scandal, they're playing high-powered matchmaker. Meanwhile, David is trying to leave the past behind him, but when he feels like he's being followed, he finally turns to the team at OPA for help. Back at the White House, Fitz is still struggling with whom to trust and how to handle a delicate hostage situation, and Jake just won't take no for an answer when it comes to dating Olivia.

Sherlock investigates a case involving a wealthy philanthropist who believes his incurable illness was given to him on purpose. Meanwhile, Sherlock tries to teach Joan his deductive skills by sending her to a suspicious dry cleaning establishment.

Jim is rejected from a youth-mentoring program. Later, Steve makes an unexpected discovery about his ex-wife.

Steven Brill

Mila Kunis, Chris Hardwick, Family of the Year

Lil Buck

Luke Wilson, Dan Mintz, Imagine Dragons

Arsenio Hall, Tristan Prettyman

Molly Shannon, Kunal Nayyar

Host Jimmy Carr and team captains Sean Lock and Jon Richardson are joined by celebrity guests Alex Jones, Joe Wilkinson, Danny Dyer and Miles Jupp in this edition of the topical panel game.

Jenna-Louise Coleman joins Adam Hills, Josh Widdicombe and Alex Brooker for this edition to chew over the topical moments of the past week.

Graham is joined on the show by Richard Gere, John Malkovich, Saoirse Ronan and Taylor Swift.