Brooke and Julian go skydiving, while Haley sets up a concert at Tric featuring Kid Cudi. Meanwhile, Quinn revisits her past when she sneaks out of town to visit a familiar face.

New Directions heads to the big Sectionals competition to go head-to-head against the Warblers and the Hipsters. While trouble brews between some of the young couples, Emma and Carl grow closer.

Jim and Stephanie plan a romantic evening away from the kids to celebrate their 18th wedding anniversary, but instead find themselves teaming up and using their superpowers to deal with a serial arsonist who is exhibiting some special powers of his own.

The stakes are higher than ever this week when host Alison Sweeney informs the last six contestants that there will be a red line and a yellow line at the weigh-in this week, and those who stay above both will be in the final four. Special guest Nastia Liukin, a five-time Olympic medalist and four-time World Champion gymnast, meets up with the players for a pop challenge that tests their stamina as they compete in five different exercises. Later, trainers Bob Harper and Jillian Michaels talk to contestants to see how they feel about going home, one contestant gets an impressive health update from Dr. Huizenga, and the players all discuss what they'd do with the grand prize money if they won. Then it's time for the traditional end-of-season challenge in which the players all put their original weight back on and drop it incrementally as they lost it on the show. Later, one player tearfully says goodbye after falling below the red line at the weigh-in, and then two more are up for an elimination that really takes the player voted out by surprise. Finally, the two eliminees return home for emotional reunions with family and friends, leaving the season 10 final four at the ranch.

Mike visits the Kentucky Equine Research facility where he helps administer blood tests to athletic horses and checks pH levels in fresh dung.

Jesse worries about being abandoned by his parents.

The crew's new-found control over Destiny's flight path introduces new risks when they find themselves in the middle of a war between two races.

When everyone ends up at Baze's loft for Thanksgiving, it isn't long before a few big secrets are exposed. Baze worries that his father, Jack, will discover he is dating his boss, Emma; Lux worries that her parents will find out she is spending time with Eric; Tasha worries that something very dark from her not-too-distant past will be discovered; and Cate worries that if she tells Ryan the truth it will further complicate their already complicated relationship.

Burt gave up on his teenage dreams of being a rock star because he was a parent. Jimmy feels so guilty for ruining his father's dream that he gets Burt a second chance to relive his rock fantasy with his music idol, Smokey Floyd at the upcoming Grocery-Palooza concert.

Adele addresses Paul's inability to make decisions.

When Steve invites Emmy to a charity ball, she is determined to prove to him that there is more to a woman than her physical appearance.

Both the ATF and the Russians prove obstacles as the club looks to heal old wounds.

A wealthy, retired auto industry executive, Leland Eckhart, is found murdered in his palatial home in the Boston-Edison area. During the investigation, Longford, Mahajan, Stone and Sanchez are confronted with multiple promising motives, ranging from robbery to jealousy over a possible love affair between his now-distraught widow and an old friend from the Detroit Yacht Club.

Susan Casey

Conan welcomes former NBA superstar Charles Barkley, radio/tv personality Dr. Drew Pinsky and to top it off, a performance by comedian/singer-songwriter Bo Burnham.

Tom Vilsack

Chelsea Handler, Kellan Lutz, Rod Stewart

In 2003 Mark Sampson and his wife Debbie moved to the Lot region of France to build their dream home. Kevin pays them another visit to see whether their new house has lived up to it's original brief.

The seven remaining candidates are called to a skyscraper in London's financial district by Lord Sugar. The teams are split into boys v girls and they have to make the best deals in a race against time to find and buy ten items in ten hours.They find their powers of negotiation being pushed as they try to track down everything on an unusual shopping list and buy them at the lowest price possible. At the end of the show one of the candidates from the loosing team is fired by Lord Sugar.