The NCIS team has to find a young girl that was kidnapped, but their investigation turns into something else when her grandfather gets way too involved.

Nathan makes a big decision about his career. Julian and Brooke watch Jamie for the day. Millicent and Victoria come up with a plan.

A trip to the dentist for the Glee clubbers gives them hallucinations while Brittany's psyche comes to focus and they sing some of special guest star Britney Spears' greatest hits.

One couple is eliminated from the competition. Special guest performances and dancing round out the evening.

Melissa accepts an invitation to dance for charity with Mark Ballas but, she can't dance.

With Stephanie's career as a research scientist taking off, and their teenage children growing up faster than Jim would care for, the family patriarch seems to be less and less relevant at home. Making matters worse is a violent armed robber at large in the city and Jim's job as a police sketch artist has thus far been unsuccessful in helping to catch the criminal. In a last ditch effort to bring his family together and fill the void in his life, Jim organizes a trip to South America where his wife Stephanie is researching a strange plant she has recently discovered.

It's a week of surprises for the contestants, starting with news from host Alison Sweeney that the competition is getting bigger with the addition of two new players who didn't make it to the ranch in the premiere but have been saved by trainers Bob Harper and Jillian Michaels. After all of the contestants get through their first grueling workout, they get eye-opening news from Dr. Huizenga about their health, revelations that are shared with surprise guests. Then the surprise of an early weigh-in - and a twist resulting in more players falling below the yellow line - comes as a shock to all the contestants. Later, they race each other in their first challenge, and then must make a difficult and emotional decision to determine which player will go home first.

Ben begins to feel like the victim in a horror film who always goes where the audience knows he shouldn't as he begins to question Melissa's commitment to being a parent. Don't go there!.

Erica is determined to pick herself up after her breakup, and Dr. Tom knows someone from Erica's past who knows exactly how she feels...Claire!

Kensi and Deeks head to the desert to search for some missing Marines whose humvee was ambushed. Nate is back from a secret assignment.

Colonel Everett and the crew continue to clash with the Lucian Alliance soldiers over control of the Destiny.

Lux considers cheating on an important exam that she needs to pass to stay in school. Cate accidentally eats some bread that contains pot, which leads to an "unusual" day at the radio station. Ryan and Cate argue about who may have taken a large amount of cash that's missing from Cate's purse.

Jimmy tries to find a babysitter when he decides to get a job.

Steve plans to take Emmy and Puddle on a family vacation; Emmy's fiance visits.

Sam Crow heads north to help Happy with a pharmaceutical favor; Gemma tries to put old family matters to rest.

Alicia makes her choice between standing by Peter or pursuing a future with Will.

Amber spends more time with her new friend Kelsey and that makes Sarah jealous. Sarah's coworker Mike, advices her on the Amber issue. Elsewhere, Julia tries to convince Joel of having another baby. Meanwhile, Adam tries to improve his relationship with Max.

Stone teams with Sanchez to look into the murder of Calvin Gibbs, a local football hero. The prime suspect turns out to be Calvin's brother, a former felon and gang member. Longford and Mahajan check out the disappearance of a groom from a wedding reception. When Alice Williams from the Wayne County Prosecutor's office asks the police to deal with the fallout from a recent police precinct incident, Fitch is ordered to speak with the press.

Arianna Huffington

Ross Douthat

TV host Jon Stewart; N.E.R.D. performs.

Patrick Dempsey, Train

Suzy and Henry's new found intimacy is making Suzy nervous. But thankfully for Suzy, a major distraction comes looming when an odd, officious little man turns up and starts poking around the apartments asking questions about ex-residents.

Dallas looks at the origins of our weather and explains how the emergence of seasons allowed life to form, all with the help of a grenade launcher. Jem travels to Scotland to check out the latest green technology - wave power. And Liz meets Richard Dawkins to prove evolution.

Cesca finds herself being drawn into a complicated situation that could put an end to her career. Ruby is concerned about Grantly's slovenly behaviour. Ruby is also facing her own problems as Janeece and John's friendship blossoms.

Kevin meets Lucie Fairweather and Nat McBride who returned to their home town of Woodbridge in Suffolk to build a new home for themselves and their young family.