Pop-Pop surprises the family with an ill-advised winter cruise to Canada, while Erica stirs up holiday trouble at home.

The final 5 teams race through Siem Reap, Cambodia where they face the second and final double U-turn of the season.

Finalists from all 3 groups come together for the semi-finals. Three singers are unmasked.

It's Ella's birthday and Curtis takes her out on a romantic surprise. Kaleb is putting extreme pressure on Jazmine to have sex with him for her first time, but Calvin comes in and rains on their parade when Curtis asks him to watch over a package for Ella at the house.

Katie pushes Anna-Kat and Franklin to take a risk and try an activity outside their comfort zone in order to create new content for her mommy vlog. Meanwhile, Oliver is convinced taking performance-enhancing drugs will help him ace his SATs. And after bonding with her TA over an art exhibit, Taylor begins to wonder if Trip is the right guy for her.

Four smiths are in for a twist when they are tasked with forging signature blades from either a large suspension cable or thin piano wire. After two intense rounds that come down to the wire, two return home to recreate the legendary Sword of Saladin, one of the sharpest blades in the world. Which smith's weapon will cut through the competition, leading them to victory and a check for $10,000?

Bravo Team enters enemy territory in the snowy Spin Ghar Mountain Range to capture Al-Hazred, the leader of a terrorist group and son of the terrorist leader that Jason took down early in his career and made him Bravo One. When they are attacked, Jason and Cerberus, Bravo's canine member, are separated from the team.

CloseHarris' job is in jeopardy after joining a protest she strongly believes in, leading to tense discussions within the family. Jackie makes a visit to Wellman Plastics only to realize the company is instituting supervised drug testing, inspiring Becky to lead her own protest.

Guy and Hunter send groceries and ask for reinvented classic food duos

Dre realizes he's out of touch with his roots after Junior claims he's turned into a "valley dad", so he takes the family to his hometown of Compton. Meanwhile, Bow tries to teach Jack and Diane about the spirit of giving by having them volunteer in Compton for Christmas.

Bravo Team reunites with Jason and Cerberus, then go underground to search booby-trapped tunnels for terrorist leader Al-Hazred.

At the urging of Spencer Richardson, Aaron defends a woman charged with holding hospital workers at gunpoint to secure lifesaving treatment for her son. Aaron and Marie navigate their newly intimate relationship, and a young social justice warrior joins Aaron and Roswell's firm.

Trevor and Roy Wood Jr. examine racial discrimination in housing, Brit Bennett discusses her novel "The Vanishing Half", and Michael J. Fox talks about his memoir "No Time Like the Future".

Jimmy welcomes actor Jamie Dornan, actor Joe Manganiello, and a musical performance by Phoebe Bridgers.

Stephen welcomes actress Kate Winslet and author Michael Eric Dyson.

Zack, Kelly, Jessie and Slater reunite at the Homecoming Gala. Toddman has a secret.

A new app is born.

Mel grapples with how to honor Mark ahead of the anniversary of his death. Jack's stress leads him to bad decisions. Hope apologizes with pie.

James welcomes a musical performance by Bad Bunny.

Ants, scorpions and fireflies provide clues for biologists to conjecture about life on exoplanet Janus, including highly adaptable pentapods.

Alex Horne gets an acting role, while Richard Herring delivers a star turn from behind a bush. Mawaan Rizwan nicks a cup of tea. Johnny Vegas takes a tumble.

It's a race against time for Georgina and Gabriel, who must use all their strength and cunning to escape. What does their future hold?

Dara O Briain and Hugh Dennis look back on recent events with guests Tom Allen, Maff Brown, Ria Lina, Ed Byrne and Rhys James.