When "TGS" returns from hiatus, Liz is alarmed by Jack's shockingly bad fall programming line-up. Meanwhile, Jenna prepares to be the ultimate bridezilla, enlisting a reluctant Liz to be her maid of honor, and Kenneth and Hazel invite Tracy to a dinner party.

Sheldon once again has to keep a secret when he learns Leonard and Penny are going to break up. Howard keeps getting teased by his fellow astronauts in space.

Team One locks down a robbery in progress at a busy downtown bank only to discover Sarah and Maddie - two young con artists who are under the thumb of dangerous ‘mentor,' Pete Joris. When Pete turns violent, Sarah is determined to cut him from their lives - while Jules and the Team race to stop her before she becomes his next victim.

Hopefuls travel to Miami for boot camp, where they'll be judged on their singing, dancing and performance style.

More than 20 warships close in on the Colorado; as Kendal is forced into a battle on the ground, Prosser questions Marcus' judgement.

Walden struggles with his feelings after his breakup with Zoey and takes it out on his friends and family.

Reagan and Chris start to worry that they are becoming an ordinary couple and go to great heights to prove otherwise. Meanwhile, Scott helps Ava declutter her life when she encounters her biggest fan.

In this flashback episode, return to the site of the plane crash and watch as each doctor tries to cope with the heartache and injuries caused by the crash. Meanwhile, back at Seattle Grace, everyone struggles to find a bit of normalcy amidst the chaos.

Andy flaunts his genealogy when he discovers he's related to Michelle Obama. Meanwhile, Darryl struggles in his new post; Dwight teaches Erin a new language to wow her boyfriend's family; and Nellie tries to persuade Pam that Jim's having an affair.

Rachel and Kurt are caught off-guard when they get unexpected visits in New York City. Meanwhile, Santana and Brittany deal with the long distance between them, and Will and Emma disagree on a new job offer.

Carter and Reese travel to Texas to unravel a 21-year-old missing child case and get a line on Root... the mysterious woman who has abducted Finch and Weeks, and plans to find the Machine no matter what it takes.

In the last challenge before the Finale the designers have to create an Avant-Garde look. Zoe Saldana is the guest judge.

Leslie negotiates with her fellow councilmen to pass a new law extending the community pool hours. When Chris comes up with a new idea to solve people's problems around the city, Ron finds himself filling a pothole for a local mom. Meanwhile, Ben and April decide to take a road trip to visit Leslie and Andy.

The cast return to the shore for their last summer in the Seaside Heights house in the premiere of the sixth and final season. Mike opens up about his time in rehab; Deena copes with being away from her boyfriend; and a pregnant Snooki makes a shocking announcement.

When a public figure is caught in a compromising position, Olivia and her team must do some heavy lifting, literally, in order to clean up the mess. But Olivia is still dealing with the ramifications of the judge's jaw-dropping verdict, and Abby continues to push for answers. In the White House, Cyrus and Fitz are forced to deal with a serious foreign policy emergency.

Sherlock uses his powers of deduction to consult on the murder of a young man who is shot upon entering his apartment. Meanwhile, Watson has dinner with her ex-boyfriend, Ty Morstan.

Bill O'Reilly

The roommates settle in to life at the shore and Deena copes with being away from her boyfriend. Nicole makes an announcement that shocks the house.

Jenny McCarthy, Slash

Dr. George Church

Craig Ferguson, Maggie Gyllenhaal, the Raveonettes

Ben Affleck, Octavia Spencer, Neon Trees

Sy's spy past comes back to haunt him when his former partner returns to kill him.

Piper's fiancee has a difficult time letting go of his ninja past.

Roseanne Barr, Keke Palmer

Eight of the celebrity couples take to the dance floor for the first time. After each of the couples have performed the judges give their verdicts on what thy have seen and give their scores.

Lorraine ends up venting her anger Julie's way after a pleased Leighton returns to work. Katie lets Kieran know about the latest news involving her love life.

Fidelma joins the church choir while Martin's confirmation service leads to an epiphany.

Stephen is joined on the show by Sarah Millican, David Mitchell, Rev Richard Coles and Alan Davies.

Knock Out gains control of the power of sound, while Starscream works on the power of hyper-speed.