Who will move to the next round in the tournament's tag team elimination match: Miyagi-Do or Cobra Kai? A shocking revelation shatters Daniel's world.

A gang killing leads Carlos to new information on his father's murder. TK contemplates a major life decision as Owen is determined to get Austin's first responders' health care coverages increased.

Luthor challenges Lois to a live telecast debate, though not everything is as it seems. John Henry and Clark face a troubling possibility.

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Sting and Jennifer Hudson serve as Mega Mentors to help prepare the artists for the Knockouts. In the Knockouts, the coaches pair three artists to perform solo against each other, then select a winner to move on. Each coach has one steal and a save.

On Christmas Eve, Murdoch and Choi investigate the disappearance of a trouble-seeking drunk.

Christmas cheer is in the air as the lifeguards prepare for their annual holiday toy drive; while surfing, a local grandpa has a heart attack and is rushed to the hospital; Sonny tells Laka he is not ready to become a lieutenant.

The family's dream of climbing Mount Everest turns into a nightmare when Stan tries to save a buck and takes them to a different, much cheaper mountain.

Laszlo and Nandor try to exorcise the demon who had possessed their neighbor Sean.

When an elderly woman is brought in with signs of dementia, Dr. Wolf investigates whether she's suffering from a neurological disorder or having a late-in-life awakening. Dr. Pierce grapples with a chilling discovery about one of her patients.

Jon Stewart analyses how Republicans exploit loopholes for political gain while Democrats stick to the rules - is it time for a change in strategy? Host Jon Stewart interviews Ruy Teixeira, founder of The Liberal Patriot and co-author of "Where Have All the Democrats Gone-

Jimmy welcomes singer Cher, actress Zoey Deutch, and a musical performance by Gwen Stefani.

Stephen welcomes actor Josh Brolin and singer-songwriter Kacey Musgraves.

As Saeko and Naruse come to terms with who the heart donor might have been, Naruse tries to learn more about Yusuke as a person.

The Price sisters bring the fight to London.

Cross and Elle dine at Ed Ramsey's house for his annual birthday soiree. But the night's twists take a dark turn, when Cross realizes that Ramsey's next victim is in the house.

It's the semi-final and the bakers show off their patisserie prowess with breakfast pastries and a classic-but-theatrical Technical. Who'll make final-worthy fruit entremets?

When Claire starts hearing an incessant rumbling sound, no-one seems able to help - until her student Kyle claims to also hear the noise.