High King Uther banishes his son Arthur, who rescues a dying boy named Derfel. Arthur entrusts Derfel to Merlin and Nimue. Years later, Uther has a new heir, but Merlin has a dark vision for the future.
A look back at the best unseen moments from the 18th series, featuring regulars Romesh Ranganathan, Jill Scott and Jamie Redknapp.
Let the banquet of slaughter begin in the season finale.
Earth's oceans cover 70% of our planet, and they're crucial for life. In Antarctica, we join a New Zealand whale rider on an expedition to find and care for a vital part of the ecosystem.
As the planet warms up, the ice at all three poles - the Arctic, Antarctic, and the Himalayas - is melting fast. In Greenland, we join an Innuit hunter navigating the changing sea ice.
As temperatures rise, wildfires are raging out of control. We meet the Yurok Tribe of California, who are drawing upon traditional knowledge to restore the land and prevent future infernos.
Ethan's agonizing choice compels him to flee, but he's captured by Nazeem. Gang warfare erupts. As Ethan's friends hunt for him, the stakes soar.
The Contenders soar to new heights in a sky high challenge, with an outcome that makes one Contender question their alliance. A decorated Champion brings the heat in the elimination.
Comic Patricia "Ms. Pat" Williams assembles a jury of friends, family members and guest stars to tackle real cases.
After losing a grandson in a racetrack crash, Rick Wilson and his family want to raise money to promote safety at tracks around Texas; they enlist Shorty and the team to build a 1956 Corvette that will be auctioned off for their cause.
Now that the floodwaters have receded at the Energy Zone, the team prepares to resume drilling into the cavern system.
When Harlem Globetrotters trainer Tom Bashline is murdered, the town of Frederick, CO, is stunned; detectives question his fiancee, her son and a burglary suspect, but as the investigation deepens, secrets emerge about the local celebrity.
After enlisting a matchmaker, Sutton tries her not-so-steady hand at dating. Annemarie reveals which first impression left a bad taste in her mouth. Dorit is shocked at how far Kyle has waded into a new friendship. Tensions flare at Crystal's Taco Tuesday between Dorit, Sutton, Crystal and Garcelle. Erika comes to a boiling point with Denise.
Detectives interrogate a woman accused of killing a lottery winner for his $30,000,000 prize; special agents press an ex-con about a missing 5-year-old girl and her dead babysitter; a murder suspect asks police for a lawyer but then provides unsolicited information about the crime; and more.
A 92-year-old woman tells investigators why she shot and killed her 72-year-old son; a detective tells a suspect that the man he's accused of stabbing has died at the hospital; a murder suspect tells detectives about the grizzly events that led to his girlfriend's death; and more.
The final four contestants perform all-new songs before the audience and panel cast their votes. The bottom two singers unmask, and then the final two go head-to-head one last time. Only one will take home the Golden Mask trophy and be crowned the Season Ten Winner!
The ladies play croquet in Palm Beach. Lisa is interrogated at dinner about her financial, parenting, and relationship choices. Nicole's family expands in a way that she could have never imagined. Lenny files a motion citing Lisa as an unfit mother.
This week, Rick, Corey, and Chum head to Louisville, Kentucky to bet on a collection of vintage spirits, a pair of goggles signed by Kentucky Derby jockey Jon Court, and a vintage pedal car in need of some serious TLC. Later, the guys visit the Louisville Slugger factory, for a home run of a surprise.