WHA-DT

When an army captain drinks a poisoned cocktail, there are multiple suspects, including Trottie; two exiled princesses believe that he was not the intended victim.

As tension builds, the staff at the Walsingham Hotel rebel; Book discovers something quite curious in Captain Victor Orr's little black book.

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.

The rise and fall of classical Rome; Bernini's Baroque Rome; the Vatican; Rome's romantic night spots.

A career-spanning hour with The Avett Brothers features new songs from their album "The Avett Brothers.".

A Navajo belt, bracelet and basket; a World War I peach can label letter; James McNeill Whistler artwork.

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.

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

Oscar's Oscarbots get lost in town; Otto and Olive try to figure out why people are becoming plaid and striped.

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.

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.

Richard revisits a homeowner to repair a water heater he thought was fixed four years ago; Tom installs a storm door with a dog in mind; Ross Trethewey looks at voice-activated smart devices.

Grilled hill tribe chicken with kua txob; the difference between fondue and fonduta; refreshing tomatoes with fontina sauce and cornichon dressing.

Items reflect 250 years of American art, artifacts, crafts and collectibles; finds include a flag quilt circa 1880, a Tiffany Studios turtleback glass shade circa 1915 and an 1884 Edison light bulb.

A Harry Kellar illusion head; a Dinh Van-designed Cartier gold ring; Tiffany glass mosaics.

Oscar's Oscarbots get lost in town; Otto and Olive try to figure out why people are becoming plaid and striped.

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

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.

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.

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

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

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.

Emmy Award-winning host John McGivern showcases great American main streets from interesting communities all over the Midwest.

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

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

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

Emmy Award-winning host John McGivern showcases great American main streets from interesting communities all over the Midwest.

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

Mayor Macklemore catches a case of the Sing-A-Longs; Ms. O from the past appears at the office.

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.

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.

The dangers of carbon monoxide and how an operational CO detector could be the difference between life and death; using stock lumber and millwork from a home center to build a home message center that mimics a window; a white orb on a stake.

Alcapurrias; the story of Coco López and piña coladas; coquito cocktails.

Comics Carol Burnett and Niecy Nash see family mysteries solved by DNA.

Exploring how the American Revolution affected Britain, with sabotage, espionage and political unrest reshaping the empire.

Mayor Macklemore catches a case of the Sing-A-Longs; Ms. O from the past appears at the office.

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

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.

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.

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.

The rich histories of two iconic trolley parks on the shores of the Great Lakes -- Seabreeze Park and Waldameer Park.

Archaeological investigations into the origins of democracy in Greece 2,500 years ago; mass graves and ancient ruins where tyrants were murdered shine light on the birth of a revolutionary form of government.