BBC First

Revealing the truth behind the planet's ancient legends; touring an island covered in polar bears, twin craters in Greece, peeking at a supervolcano hidden under Yellowstone Park and examining an ocean formation that's eerily similar to Atlantis.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Bradley Walsh guides four people who don't know each other -- Ellen from London, Ben from Surrey, Dan from Cannock and Ange from Oxford, as they take on a Chaser.

Sandi Toksvig looks at quantity and quality with James Acaster, Bridget Christie, Alan Davies and Joe Lycett.

Sandi Toksvig looks at quads and quins with Aisling Bea, Nish Kumar and David Mitchell.

Rick reveals the right, wrong and totally impossible answers to the contestants; discovering who has what it takes to weed out the wrong info and take a crack at the 10,000-pound jackpot.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Bradley Walsh guides four people who don't know each other -- Ellen from London, Ben from Surrey, Dan from Cannock and Ange from Oxford, as they take on a Chaser.

Just when Kate and Sean had resigned themselves to Sydney's extortionate property market, Kate inherits a country manor. The pair decide to turn it into a B&B, but what they don't expect are the restless spirits already there.

The Jessops head to Malta to visit Rachel and Robin's dad; tensions rise when they realize everyone has different ideas about how to spend their vacation time; Rachel reveals her plan to address long-standing family grievances.

Being a vampire has never come naturally to Val, but as he is heir to the throne, all eyes are on him to live up to expectations; when his mom reveals a secret, all becomes clear.

Alison and Mike receive some exciting news about their guesthouse business, but the fallout soon sees tensions running high between the pair as they struggle to deal with particularly demanding guests.

Flip for a gold disc that belonged to rocker Rod Stewart, an imperial snuffbox and 19th-century embroidery; a look at a local horseback riding custom and comparing two signed editions of Harry Potter; explores the history of the Paisley shawl.

It's Caramel Week and Prue and Paul have set the bakers three sticky challenges.

Bradley Walsh guides four people who don't know each other -- Ellen from London, Ben from Surrey, Dan from Cannock and Ange from Oxford, as they take on a Chaser.

Flip for a gold disc that belonged to rocker Rod Stewart, an imperial snuffbox and 19th-century embroidery; a look at a local horseback riding custom and comparing two signed editions of Harry Potter; explores the history of the Paisley shawl.

It's Caramel Week and Prue and Paul have set the bakers three sticky challenges.

Sandi Toksvig looks at quantity and quality with James Acaster, Bridget Christie, Alan Davies and Joe Lycett.

Sandi Toksvig looks at quads and quins with Aisling Bea, Nish Kumar and David Mitchell.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Bradley Walsh guides four people who don't know each other -- Ellen from London, Ben from Surrey, Dan from Cannock and Ange from Oxford, as they take on a Chaser.

Rick reveals the right, wrong and totally impossible answers to the contestants; discovering who has what it takes to weed out the wrong info and take a crack at the 10,000-pound jackpot.

Walking among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving in the Alberta badlands, a giant South African footprint and a pentagram etched into a remote peninsula in Kazakhstan.

Explorers discover tunnel systems, a sprawling city, and military barracks.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

Walking among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving in the Alberta badlands, a giant South African footprint and a pentagram etched into a remote peninsula in Kazakhstan.

Explorers discover tunnel systems, a sprawling city, and military barracks.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

Walking among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving in the Alberta badlands, a giant South African footprint and a pentagram etched into a remote peninsula in Kazakhstan.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Bradley Walsh hosts as four strangers -- Nick from Bishop Auckland, Kirstie from Ware, Ali from Manchester and Gwen from Swansea -- team up to challenge a Chaser and win thousands of pounds.

Gyles Brandreth, Judi Love and Kiri Pritchard-McLean.

Sandi Toksvig puts the UK-US special relationship under the microscope with Kemah Bob, Alex Edelman, David Mitchell, and Alan Davies.

Ready to say goodbye to this group of contestants, who are primed and ready for their last shot at taking home the 10,000 pounds.

Being a vampire has never come naturally to Val, but as he is heir to the throne, all eyes are on him to live up to expectations; when his mom reveals a secret, all becomes clear.

Alison and Mike receive some exciting news about their guesthouse business, but the fallout soon sees tensions running high between the pair as they struggle to deal with particularly demanding guests.

Flip for a gold disc that belonged to rocker Rod Stewart, an imperial snuffbox and 19th-century embroidery; a look at a local horseback riding custom and comparing two signed editions of Harry Potter; explores the history of the Paisley shawl.

It's Caramel Week and Prue and Paul have set the bakers three sticky challenges.

When Mrs. McCarthy's goddaughter goes missing, Father Brown follows her trail to a risqué gentlemen's club.

Convinced that events catastrophic to the Cold War are being planned at the British Open Chess Championships, Sister Boniface must brush off her chess skills and join the tournament.

Frank and Lu must clear their names when they are framed for various crimes by some mysterious doppelgängers.

When Mrs. McCarthy's goddaughter goes missing, Father Brown follows her trail to a risqué gentlemen's club.

Convinced that events catastrophic to the Cold War are being planned at the British Open Chess Championships, Sister Boniface must brush off her chess skills and join the tournament.

Frank and Lu must clear their names when they are framed for various crimes by some mysterious doppelgängers.

Gyles Brandreth, Judi Love and Kiri Pritchard-McLean.

Sandi Toksvig puts the UK-US special relationship under the microscope with Kemah Bob, Alex Edelman, David Mitchell, and Alan Davies.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Bradley Walsh hosts as four strangers -- Nick from Bishop Auckland, Kirstie from Ware, Ali from Manchester and Gwen from Swansea -- team up to challenge a Chaser and win thousands of pounds.

Ready to say goodbye to this group of contestants, who are primed and ready for their last shot at taking home the 10,000 pounds.

Traipsing along ancient pathways crisscrossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

Discovering shocking truths about religious rituals, sacred symbols, and spiritual traditions; learning the brutal truth about execution rites in Roman England, looking at shark bones in a Peruvian temple; unearthing a silver amulet in Germany.

Griff uncovers what it is about living in the Pacific Northwest that makes people strive for happiness and what he learned on his journey across Canada.

Traipsing along ancient pathways crisscrossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

Discovering shocking truths about religious rituals, sacred symbols, and spiritual traditions; learning the brutal truth about execution rites in Roman England, looking at shark bones in a Peruvian temple; unearthing a silver amulet in Germany.

Griff uncovers what it is about living in the Pacific Northwest that makes people strive for happiness and what he learned on his journey across Canada.

Traipsing along ancient pathways crisscrossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Melanie from Worcestershire, Matt from Manchester, Phil from London and Lisa from Ellesmere Port team up to face one of the country's finest quiz experts.

Jordan Gray, Jason Manford, Sara Pascoe and Alan Davies to find the links between ugly feet, empty crisp packets, a Vermeer masterpiece and Countess Mountbatten's lingerie.

Sandi Toksvig dusts off her tinfoil hat for a look at ufology with Cally Beaton, Nish Kumar, Tom Ward, and Alan Davies.

Weighing options carefully as Rick welcomes 24 new contestants, who all want a chance to make 10,000 one-pound coins rain from the giant exclamation point on stage; seeing who wins big by keeping their cool and dodging the impossible answers.

When Mrs. McCarthy's goddaughter goes missing, Father Brown follows her trail to a risqué gentlemen's club.

Convinced that events catastrophic to the Cold War are being planned at the British Open Chess Championships, Sister Boniface must brush off her chess skills and join the tournament.

Frank and Lu must clear their names when they are framed for various crimes by some mysterious doppelgängers.

Ross Noble, Sara Pascoe and Sally Phillips join Sandi and Alan for a varied episode.

Sandi Toksvig takes a QI look at some vets with Tom Allen, Melanie Bracewell, Desiree Burch and Alan Davies.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Quentin Tarantino, Ellen DeGeneres, Colin Farrell and Gemma Chan join Graham on his sofa; with music from Suede.

Ross Noble, Sara Pascoe and Sally Phillips join Sandi and Alan for a varied episode.

Sandi Toksvig takes a QI look at some vets with Tom Allen, Melanie Bracewell, Desiree Burch and Alan Davies.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Quentin Tarantino, Ellen DeGeneres, Colin Farrell and Gemma Chan join Graham on his sofa; with music from Suede.

Jordan Gray, Jason Manford, Sara Pascoe and Alan Davies to find the links between ugly feet, empty crisp packets, a Vermeer masterpiece and Countess Mountbatten's lingerie.

Sandi Toksvig dusts off her tinfoil hat for a look at ufology with Cally Beaton, Nish Kumar, Tom Ward, and Alan Davies.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Melanie from Worcestershire, Matt from Manchester, Phil from London and Lisa from Ellesmere Port team up to face one of the country's finest quiz experts.

Weighing options carefully as Rick welcomes 24 new contestants, who all want a chance to make 10,000 one-pound coins rain from the giant exclamation point on stage; seeing who wins big by keeping their cool and dodging the impossible answers.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

It's officially the third-highest snowfall in Manitoba in the last century; commercial fishers are plagued by deep drifts and hidden pockets of slush that can stop them in their tracks; Chris finds out the hard way that traveling alone is a bad idea.

Discover the devastation snow can bring as a hurricane blizzard hits the eastern coast of Canada in 2020; then glimpse its icy beauty in mesmerizing brinicles and snow flowers, and learn how artificial glaciers can be used to alleviate drought.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

It's officially the third-highest snowfall in Manitoba in the last century; commercial fishers are plagued by deep drifts and hidden pockets of slush that can stop them in their tracks; Chris finds out the hard way that traveling alone is a bad idea.

Discover the devastation snow can bring as a hurricane blizzard hits the eastern coast of Canada in 2020; then glimpse its icy beauty in mesmerizing brinicles and snow flowers, and learn how artificial glaciers can be used to alleviate drought.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

A thrilling battle of brainpower as four contestants pit their wits against The Chaser.

Sandi and Alan look at some 'U' animals with Rhod Gilbert, Lara Ricote and Ahir Shah.

Tom Allen, Chris McCausland and Lou Sanders look at a range of unrelated 'U' topics.

Players who think they know how to unlock a big payout.

Ross Noble, Sara Pascoe and Sally Phillips join Sandi and Alan for a varied episode.

Sandi Toksvig takes a QI look at some vets with Tom Allen, Melanie Bracewell, Desiree Burch and Alan Davies.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

Quentin Tarantino, Ellen DeGeneres, Colin Farrell and Gemma Chan join Graham on his sofa; with music from Suede.

A pop group is on an island with the manager recording an album, when the lead singer, Stevie Smith, is electrocuted in a swimming pool; a clumsy new officer J.P. Hooper joins the investigation.

A rock star is murdered in a locked theatre, forcing Mack to uncover the truth hidden in the band's decades-old history.

Stephen welcomes new players Miles and Steph, who both believe that they have what it takes to beat the returning Jeopardy!

A pop group is on an island with the manager recording an album, when the lead singer, Stevie Smith, is electrocuted in a swimming pool; a clumsy new officer J.P. Hooper joins the investigation.

A rock star is murdered in a locked theatre, forcing Mack to uncover the truth hidden in the band's decades-old history.

Stephen welcomes new players Miles and Steph, who both believe that they have what it takes to beat the returning Jeopardy!

Sandi and Alan look at some 'U' animals with Rhod Gilbert, Lara Ricote and Ahir Shah.

Tom Allen, Chris McCausland and Lou Sanders look at a range of unrelated 'U' topics.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

A thrilling battle of brainpower as four contestants pit their wits against The Chaser.

Players who think they know how to unlock a big payout.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Measure up the conqueror and ponder whether he was a villain or a hero to history; following his horde's path of atrocities, which paved the way for stability and tolerance, and examine the secrets of his lost tomb and legacy.

Braving the fast-moving rivers, the group paddles off the lake in search of natural salmon runs in the waterways; their efforts to corral the fish are more dangerous than they realized.

With their minds and bodies adapting to the land, the group welcomes a medicine teaching about the plants in Syilx territory; the adventurers struggle to find food and decide to try their hand at spearfishing in the river.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Measure up the conqueror and ponder whether he was a villain or a hero to history; following his horde's path of atrocities, which paved the way for stability and tolerance, and examine the secrets of his lost tomb and legacy.

Braving the fast-moving rivers, the group paddles off the lake in search of natural salmon runs in the waterways; their efforts to corral the fish are more dangerous than they realized.

With their minds and bodies adapting to the land, the group welcomes a medicine teaching about the plants in Syilx territory; the adventurers struggle to find food and decide to try their hand at spearfishing in the river.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Roman Kemp and sidekick Sarah Greene host the quiz show where contestants race on moving podiums across the studio floor; correct answers get the players moving, while wrong answers will stop them in their tracks.

A thrilling battle of brainpower as four contestants pit their wits against The Chaser.

Justin Moorhouse, Emmanuel Sonubi and Holly Walsh join.

Sandi Toksvig is joined by Maisie Adam, Daliso Chaponda, Jack Dee and Alan Davies for a look at some underthings.

Sizing up three rounds of answers that are right, wrong, and plain old impossible.

A pop group is on an island with the manager recording an album, when the lead singer, Stevie Smith, is electrocuted in a swimming pool; a clumsy new officer J.P. Hooper joins the investigation.

A rock star is murdered in a locked theatre, forcing Mack to uncover the truth hidden in the band's decades-old history.

Stephen welcomes new players Miles and Steph, who both believe that they have what it takes to beat the returning Jeopardy!

Kate visits the hospital again to confirm what she sees and finally accepts that the ghosts are real and here to stay.

Rachel and Paul prepare to be godparents, provided Paul gets baptized first. While Rachel pursues eternal youth through squats, a newly single Amy throws herself into her music ahead of the Bedford Battle of the Bands as fangirl Sue cheers her on.

The ghosts treat Alison to a wonderfully festive Christmas present and Pat faces his past.

A new environmental report on global heating causes temperatures to rise in the Oversight Team as they try to find ways to combat not only the report but global heating itself.

Eric and Beth smell an ulterior motive when Cathy and Colin, fresh off a luxury cruise, try to pressure them into booking a group vacation together; when they decline, a new target surfaces, Christine, who has a refund burning a hole in her pocket.

Kate visits the hospital again to confirm what she sees and finally accepts that the ghosts are real and here to stay.

Rachel and Paul prepare to be godparents, provided Paul gets baptized first. While Rachel pursues eternal youth through squats, a newly single Amy throws herself into her music ahead of the Bedford Battle of the Bands as fangirl Sue cheers her on.

The ghosts treat Alison to a wonderfully festive Christmas present and Pat faces his past.