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When another homeless man is found dead, Geordie and Will realize they may have sent the wrong man to prison and that the real killer could still be at large.

A young biker is found dead following a charity motorbike race; Will and Geordie struggle to work out who would want to hurt a gifted young man.

After a fatal accident, Will is devastated to be the cause while Geordie rushes to exonerate his friend.

Experts analyze prominent international affairs topics and America's role in a shifting world.

Exploring Alaska's Kenai River; the water, salmon and temperate forests of the Kenai Peninsula.

A photographer who takes post-mortem portraits receives bizarre and threatening messages from beyond the grave; Eliza's investigation takes her into the spirit world.

A young autistic girl witnesses her father's murder but is unable to tell anyone what happened.

Alphy's trip to reconcile with his mother takes a shocking turn when a passenger is murdered and he becomes the prime suspect; Leonard defends Raymond from Geordie; Miss Scott hides a big secret.

Bates is taken aback when Vera threatens to expose old secrets which could bring down the Crawleys. Mary is the only one who can protect the family, but she pays a high price when she turns to Carlisle for help.

Through her feverish delirium, Cassandra guards Jane's letters from her sister-in-law Mary Austen.

Jo recommits to his family; Soames and Irene's Parisian honeymoon is cut short.

Edmond continues to infiltrate the lives of his betrayers, uncovering more dark secrets; Mercedes starts to suspect Edmond's true identity.

In Paris high society, Edmond meddles in the lives of those he wishes to destroy; Edmond struggles to conceal his identity from Mercedes.

Never-before-seen stories of women who broke codes and split atoms, gathered news, crossed front lines and rescued children during World War II.

Lyla has to help multiple people but rushes each task, which makes things worse; Lyla must use her left hand after hurting her right wrist.

Martin and Chris stumble upon a rare and endangered seedling of a butternut tree; while looking for its parent tree, they only discover dead ones.

Arthur and D.W. work together to clean their rooms so they can go the park; Arthur has the winter blues.

The Hunters investigate a weather mystery surrounding massive rocks that move on their own in the desert.

Lyla has to help multiple people but rushes each task, which makes things worse; Lyla must use her left hand after hurting her right wrist.

Carl's favorite sour pickle scratch-n-sniff sticker loses its smell; Carl notices that his baby blanket, Knit-Knit, has a hole in it.

Daniel needs some space when O sits too close to him at the treehouse; Miss Elaina asks Daniel for more space when they make pretzels together at the bakery.

Phoebe and Jay create a game show for Grandma; Phoebe and Jay must find the best way to spend the community coin jar money by taking a building-wide vote.

Captain Elmo's solo mission to Jupiter is interrupted when his friends join and mess up his plan; Grover tries to fix the spaceship boosters.

Ellie's so excited to be going home to Jamaica that the Wombats and Mr. E start to worry whether she'll come back; Buckley comes over for a playdate with Zadie.

Captain Donkey and her crew search for the Ruby Red Tater Treasure; Panda finds his favorite hoodie, but it no longer fits.

Rosie and Javi make flowerpots using repurposed items for the Robot Picnic; Rosie and Javi open a car wash to clean Iggy's ride-on car.

Elinor is intrigued when she and her friends find a plant that has grown in a zigzag; Elinor loves her butterfly suit, but how is she supposed to drink when her arms are now wings?

Alma and Howard search for a Black cowboy in the Bronx; Alma and Junior open a play hair salon at home.

Molly and Tooey join Nina and Olin on a cave exploration to find out how old Qyah really is.

Xavier learns that asking questions can lead to exciting discoveries; Xavier learns that it's normal to feel different emotions when it comes his turn to jump off the diving board.

Exploring the melodies that have shaped America's story, from spirituals and hymns to Broadway and contemporary classics.

The missing chapter is discovered, leading to revelations.

The Kindland Movement of Cleveland brings communities together to highlight the importance of kindness.

Mistico Park's hanging bridges and wildlife; organic farming at Vida Campesina; a safari cruise on the Rio Sarapiqui; the Organization for Tropical Studies; an organic pineapple farm.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day.

Live news program produced out of BBC's Washington, D.C. bureau; host Sumi Somaskanda.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Exploring fat's misunderstood role in the kitchen; cooking oils, storage tips and fat myths; what makes great olive oil; frying fish in peanut oil with a bold mayo smear.

The tiny railroad town of Goffs in the eastern Mojave Desert; Amboy; the only piece of Route 66 that runs through a military installation; Elmer's Bottle Tree Ranch.

A Frank McCarthy oil painting; baseball autographs circa 1945; a 1977 Elvis Presley watch presented to Redd Foxx.

A 1977 Kenner Darth Vader figure; a Tippco toy motorcycle with a sidecar; a Ty Cobb professional model bat circa 1925.

Revisiting 1968 Montreal, where Black liberation movements converged at the Congress of Black Writers.

Three generations of agriculturalists reflect on their roots and future.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.

Celebrating picnics and barbecue with Chris Fennimore and the America's Home Cooking team; recipes include horseradish potato salad, baked beans, apple hand pies and more summer favorites.

Chris Fennimore and special guests celebrate international cuisine; recipes include chicken Parmigiana, Asian dumplings, Turkish red lentil soup, Middle Eastern hummus, baba ghanoush and bobalki.

Lyla and Everett make a lemonade stand to raise money for the animal shelter; Lyla and Everett learn Double Dutch to become part of a neighborhood crew.

Stuck without power in the bamboo forests of China, the Wild Kratts must figure out how to save the pandas, who are being turned into stuffed toys by villain Zach Varmitech.

Arthur wants a Woogle since everyone else has one; Arthur is afraid of what dessert his father will make for a school party.

The Hunters head to a nearby mountain to learn about snow.

Lyla and Everett make a lemonade stand to raise money for the animal shelter; Lyla and Everett learn Double Dutch to become part of a neighborhood crew.

Carl takes his friends on an "Amazing Smell Tour of Fuzzytown," but Lotta doesn't agree with Carl's list of the best smells; Carl and his friends go on a camping trip.

After Daniel runs and slips at the neighborhood pool, he remembers the rules so he can stay safe; Daniel is afraid to put his face in the water at his first swim class.

Phoebe, Jay, Grandma Annie and Pete create the family's first recipe for Sunday greens; Phoebe and Jay are excited about their first campout in the courtyard.

Rudy feels angry when Abby asks him to share his toys, so his friends make a movie to show that sharing can be fun.

Sammy and Benito find a way to communicate; Sammy makes plans for his mom's visit.

Donkey and Cousin Hodie figure out how to have fun in the rain; Donkey is patient while Cousin learns a new game at Grampy's Game Day.

Rosie and Javi want to play Abuela's song for Music Night at Tia's Restaurant; Rosie wants to be an inventor.

The kids try to determine what the weather will be like for Animal Town's parade; Olive gets a bad case of the hiccups.

Alma and friends build a cardboard clubhouse; Alma solves the case of a missing piragua.

Molly and Tooey design their dream treehouse, complete with a windmill and elevator, but plans might have to change when Tooey's cat gets loose; Tooey's puppy doesn't like following directions.

Louis Pasteur helps Xavier with his volcano experiment project; Rachel Carson helps Brad figure out a way to help butterflies migrate.

A Frank McCarthy oil painting; baseball autographs circa 1945; a 1977 Elvis Presley watch presented to Redd Foxx.

Philip Jackson adventures off-piste, while Brian Cox is surprised to find one of the world's greatest works of art in a most unusual place.

The impact that the hot dog has had on pop culture, from architecture to late-night snacks and meals on the go.

Coverage from Washington, D.C. and London, with a regular panel of guests from across the political spectrum discussing the biggest stories of the day.

Live news program produced out of BBC's Washington, D.C. bureau; host Sumi Somaskanda.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

The Desert National Wildlife Refuge's outback contains fossils and a yucca forest; interpretive trails; an ancient grinding stone; an aquarium exhibit.

A Southern Utah road trip leads to a red rock photo safari in Zion and Bryce Canyon National Parks in early spring.

Joe Manganiello and Tony Gonzalez uncover close relatives whose names they never knew before.

Moderator Aaron Tang guides a panel through a hypothetical scenario around election issues and government integrity.

A look inside the Apollo 11 spacecraft on its historic journey includes classified mission audio of conversations between astronauts Neil Armstrong, Buzz Aldrin and Michael Collins.

Central Valley Astronaut Jose Hernandez traveled to space in 2009.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

Phyllis McGuire, Pat Boone and Nick Clooney host a trip back to the 1950s with a mix of live performance and archival footage featuring classic moments from artists such as Perry Como, Debbie Reynolds and the McGuire Sisters.

Lyla and Ale make an escape-proof container for her pet tarantula; rain keeps the kids inside, so they recreate park activities indoors.

Martin and Chris try to rescue a foal who is separated from his mother by a rogue wave.

George becomes popular when he takes up ventriloquism; Francine cannot help falling in love with kittens.

As a hurricane approaches, the Hunter kids learn about preparation and safety, moving furniture inside and checking their emergency supplies.

Lyla and Ale make an escape-proof container for her pet tarantula; rain keeps the kids inside, so they recreate park activities indoors.

Lotta competes in the Fuzzytown Music Maker Championship, but the noise on stage becomes too much for her and she leaves; Carl forgets his bottle cap collection at his dad's house.

The Tiger family takes Margaret to the clock factory; the Tiger family picks their own dinner at the Enchanted Garden.

Phoebe and Jay learn how to keep cool while using their thermometer to track the temperature in the apartment; Pete and Grandma Annie teach the kids how to tell time.

Cookie Monster tries to bake a new cookie for Elmo; Abby and Grover solve a puzzle of their own.

Wombats unstick a stuck train; the group goes to Bellyflop Lake.

Donkey and Panda make a birthday gift for Bob Dog; Donkey and Panda's playdate goes awry thanks to one of Harriett's inventions.

Rosie tries to send Abuela a birthday party in the mail; Rosie tries to send Gatita in the mail.

Ari tries to make the world's tallest toy block tower, but it keeps falling over; Elinor and Ari try to teach Ari's baby sister how to walk.

Alma and her family spend the day saying yes to everything; Alma helps Junior and Emi test a hypothesis.

Molly and Stormee try to retrieve Grandpa Nat's microphone; Molly and Stormee encounter a rattlesnake.

Louis Braille shows Brad there are many ways to read; Zaha Hadid encourages Xavier, Yadina and Brad to build their treehouse in their own unique way.

Joe Manganiello and Tony Gonzalez uncover close relatives whose names they never knew before.

A look inside the Apollo 11 spacecraft on its historic journey includes classified mission audio of conversations between astronauts Neil Armstrong, Buzz Aldrin and Michael Collins.

Central Valley Astronaut Jose Hernandez traveled to space in 2009.

Coverage from Washington, D.C. and London, with a regular panel of guests from across the political spectrum discussing the biggest stories of the day.

Live news program produced out of BBC's Washington, D.C. bureau; host Sumi Somaskanda.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Two veteran pollsters discuss climate, environment and energy; featuring Ashley Grosse and Alec Tyson.

The future of the agriculture industry and stories of how it touches us all far beyond the table.

Exploring Niagara Falls, its three separate waterfalls, and the mammals, birds and reptiles that surround it.

Astrophysicist Janna Levin explores black hole science.