The Results are in and for Jessica Sanchez, Josh Ledet, Hollie Cavanaugh, Skylar Laine, Phillip Phillips and Elise Testone it could mean the end of their time on Idol. Musical Guests: Stefano Langone and Katy Perry.

Bernadette reconsiders marrying Howard after learning about his sexual history.

Alaric finds an unexpected ally to guide him on his dangerous new path, while Damon and Meredith try to figure out what their next move should be. At the school's 1920s Decade Dance, Bonnie asks Jamie to go with her and, at Caroline's suggestion, Elena asks Stefan to be her date. Caroline is pleasantly surprised when Tyler shows up at the dance determined to sweep her off her feet, but Klaus does his best to come between them. The dance takes a deadly turn when Damon and Stefan realize they need the help of Matt, Jeremy and especially Bonnie to undo a spell that could prove devastating for everyone.

When Annie discovers the study group's yam experiment smashed to smithereens on the science lab floor, the group mobilizes to expose the criminal and save their grade. Once Abed and Troy think they have located the perpetrator, the group conducts a "trial", with a reluctant Professor Kane serving as judge. Jeff soon realizes, however, that the plot is thicker than anyone suspects.

Becca is forced to recall details of a traumatic former case in order to prove her innocence now. Meanwhile, Michael goes to new lengths to protect himself and Oksana.

When their Kabletown bosses announce they will no longer pay for TGS to be a live show, Liz Lemon and Jack Donaghy realize their lives will actually be easier if they shoot canned episodes fast and cheap. Only Kenneth the page objects, urging that nothing can replace the communal experience of live television. He tries to convince the TGS staff to fight for their right to be live by taking them and our audience through a magical look back at the illustrious history of Studio 6H.

Jeff is stumped when Audrey asks him to name five nice things about her. Meanwhile, Russell pushes Timmy to serenade a woman he likes; Jennifer and Adam mistakenly receive Audrey and Jeff's bank statement.

Leslie goes toe-to-toe with Bobby Newport in their big televised debate. Ann, Tom, and Chris work in the media spin room, while Ron goes the extra mile to save a party for Leslie's donors.

After eight years of practice, the residents head to San Francisco for their oral boards; sparks fly between Catherine and Richard when they bump into each other at the hotel; Bailey intervenes after Owen and Teddy get into a heated argument about their young car crash patient; and Mark tries to recruit Lexie for one of his cases. Meanwhile, Alex feels guilty for being away from the hospital when Tommy's health begins to fail.

Andy makes a huge mistake when he shows up at a fundraising auction for Robert Lipton. Nellie needs Darryl to show her how a taco is eaten.

When a crystal is magically stolen from the abandoned house, the Circle decides it was the traitor witch working with Eben so Jake calls for a meeting with Isaac to see if they can get him to change sides. Cassie's loose grasp on her dark magic threatens to destroy any possible alliance when their pursuit of the traitor leads them to the "Creepiest Place on Earth." Meanwhile, Faye and Jake work together to steal Dawn's crystal, Melissa and Adam pair up and uncover a new magic trick. Meanwhile, a frustrated Diana reaches out to Charles for help.

To track the latest person of interest, Reese goes under cover as part of an armored truck crew; throughout the case, Reese is reminded of tough decisions he was forced to make during his last CIA mission.

Martin attempts to find Teller's mysterious workshop and winds up aiding another professor, Logan, to win big at poker. Meanwhile, a young Italian man creates a viral video to track down the love of his life, whom he only met in passing, and a city slicker who plans to sell off his dead father's ranch, winds up learning a lesson from a horse that makes him appreciate the rural life his father chose. Then, Martin's sister-in-law, Abigail Kelsey, visits Clea and Jake at the board-and-care facility, much to Martin's dismay.

Troy hunts a gator that has eluded him for years; Glenn and Mitchell help a friend move his houseboat; and Liz has trouble taking down an enormous alligator.

The pranksters try stealing kisses from strangers on the streets of Manhattan and play word games with shoppers.

Lucy Hale is the guest host. Prank victims include Ian Harding, Vanessa Hudgens and Josh Hutcherson.

Jane, Lisbon and the CBI try to locate the killer of a charred corpse found in an alley outside a cabaret featuring female impersonators.

When a Bowl game ends differently in Michael's two realities, he begins to understand how small events can have major consequences when two different crimes result. Meanwhile, Emma breaks up with Rex in one reality, while Vega plans a going-away party for Michael in the other.

After the Amanda Tanner case takes a shocking turn, one-time friends Olivia and Cyrus take heated, opposing viewpoints, and Cyrus tries to help in investigating the personal lives of Olivia and her associates. Meanwhile Olivia and her team help a dictator locate his wife and children who have been allegedly kidnapped, and Quinn goes out with a reporter seeking information.

Robert Draper

Jack Black, Simon Doonan, Ingrid Michaelson

Jack White

Robin Williams, Andrew Luck

Diane Keaton, Natalie Coughlin, Moby

Toni Collette, Mike Massimino

Phryne investigates the death of a young female worker in a factory ?accident' and soon learns that the woman's death might not be the misadventure the police think it is. Faced with a wall of secrecy and lies, Phryne sends her trusty maid, Dot, undercover into the factory to investigate. When a second suspicious death occurs, Phryne fights desperately to save one of her closest friends from the gallows.

In this episode, Lee Mack is joined by Miranda Hart and Clare Balding and David Mitchell is joined by Dale Winton and Richard Bacon.

Homeland star Damian Lewis guest-hosts the satirical current affairs quiz, with regular team captains Ian Hislop and Paul Merton joined by celebrity panellists including Susan Calman to poke fun at the news.

In a desperate bid to prove his manliness, Lee joins Tim, Daisy and Lucy on a camping weekend in the middle of a dark spooky forest.

Jimmy Carr once again oversees the disputes and deliberations on the topical events that set the nation's chins wagging. Jon Richardson and Sean Lock are joined by Joe Wilkinson, Ellie Taylor, Natalie Cassidy and Gabby Logan.

There's a Formula 1 challenge and speed skating in the studio, while Peter Crouch, Jimmy Carr and Louise Hazel are the guests.

Sue Perkins, Bill Bailey, David Mitchell are the guests on the show this week.

Graham is joined on the show by Matt LeBlanc, Zac Efron, Lee Mack and Marina and the Diamonds.