Superstars Kelly Clarkson, John Legend, Jennifer Nettles and Robin Thicke, take the stage with their remaining Duet partners for an evening of standards from the Golden Age of music. America's voting results from the prior week will be revealed at the top of the show, sending one contestant home, so that only four remain in the competition to perform that night. At the end of the night, the polls will open once again and America will get to choose who stays in the competition and who is eliminated.

Paige and the Renegade are forced to work together when they crash on a remote island that is sinking into the sea.

A high profile double hand replantation becomes Alex's (Durance) chance to prove to Kinney (Wendy Crewson) that she is still capable of being Chief Surgical Resident. In the ICU, Maggie (Ross) believes a homeless man may have been misdiagnosed.

Joe follows Tommy's lead to new hunting territory; Troy must rush to fill his remaining tags; R.J. and Jay run out of fresh hunting ground; and Liz and Kristi search for gators in Liz's father's favorite hunting spot.

Charlie challenges his group to do thirty-six hours of sleep deprivation therapy so that their "inhibitions come down and the truth comes out" - except the result turns out to be the exact opposite.

When Andy responds to a domestic disturbance the social worker on scene is none other than Claire McNally, the woman who abandoned Andy and her father 15 years ago. Andy's issues with her estranged mother come crashing back as she's forced to investigate together with Claire this family's turmoil. The rest of the team hurry to find the missing mother and two children before anything disastrous happens. When recovered guns resurface on the streets, Detective Barber's badge is on the line.

Ryan has to deal with new problems when Wilfred becomes popular.

In search of adventure, Tyler and Milo accidentally crash a wake. Gibbs is surprised to find himself attracted to Neal's gamer friends, but he quickly learns the rules of Drogar the hard way when he gets too close to the wrong character.

Louie has dinner at a friend's house.

Jenna revels in her and Jake's official relationship status until she learns a hidden camera is filming at the Sanctuary. She then goes to great lengths to destroy the tape, enlisting Ming and others to help.

Gary and Matt kick off this special MasterClass by officially welcoming and congratulating this season's Top 10. Topping off the week with an amazing Italian feast.

Jimmy Carr returns with the irreverent panel show, in which team captains Sean Lock and Jon Richardson are joined by celebrity guests to answer questions based on opinion polls carried out around the country to see who best understands what is going on in Britain today.

It's the night of Merc's 'Man of the Year' event. His moment of glory ends up being ruined though when Carol tells him about Matt's affair with Jamie. Beverly and Rob grow closer. Sean is forced to decide whether he's willing to forget the past and fight for a future with his wife.