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Eliza investigates a foreign ambassador's death while partnering with a woman whose intellect and power mirror her own.

Tristan and Charlotte enjoy a romantic picnic at Beauvoir Manor; James checks in at Heston Grange.

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

Fern gets a cell phone; Brain does not want everyone to know that he was held back in kindergarten.

The agents track down missing monuments; the agents must determine who the real Oswald is.

Martin and Chris take Jimmy to a swimming tutor -- a sea otter named Coach.

The Hunters try to help an injured bird so it can join its friends migrating south for the winter.

Lyla and Luke clean Stu without a bath; Lyla and Ale find a way to protect the callaloo plants from stink bugs.

Forrest can't wait to try everything at the Fuzzytown Friends Picnic, but gets into trouble when he is unable to wait his turn; Carl hosts a Super Blue Moon Sleepover.

Daniel and Grandpere hunt for buried treasure; Grandpere takes Daniel on a sunrise boat ride before the family heads back home.

Jay and Lupe use wayfinding signs to track down Phoebe; Pete and Craig face an epic hoops battle on the courts.

Elmo, Tamir and their friends are making a Peace Tree to celebrate Martin Luther King Jr. Day.

The Wombats try to save Harvest Day as it becomes overrun by fog; Zeke tries to create stew that meets Mr. E's high standards.

Donkey accidentally breaks Grampy's favorite toy; Donkey and Panda play with a new Tater Buddy.

For the Day of the Dead celebration, Rosie is in charge of the Catrina doll, but it keeps disappearing; Rosie celebrates Lunar New Year with the Lius.

Elinor and her friends are inspired to build a nest; Elinor and her friends learn that it is good to eat different types of foods.

Alma gets jealous when Rafia and Lucas talk about their fun playdate; Alma can't decide if she wants to see a new movie.

Molly learns how to make offerings, hoping to stop a volcano from erputing.

Yadina learns that if she wants to reach the top of the hill, she must keep going; everyone has ideas that are worth sharing.

Elmo, Tamir and their friends are making a Peace Tree to celebrate Martin Luther King Jr. Day.

Daniel and Grandpere hunt for buried treasure; Grandpere takes Daniel on a sunrise boat ride before the family heads back home.

An Asscher-cut diamond ring; a Maynard Dixon painting; a San Francisco Seals-signed baseball.

How a still object remains at rest while an object in motion keeps moving unless another force acts on it; safety restraints; technology coordinator Michelle Massey; pediatrician Mona Hanna-Attisha.

Celebrating the 17th of May amid the natural beauty of Finse; during winter and late spring, the only transportation to the snow-covered peaks is either by skis or the Bergen Railroad.

The Filipino community in Seattle, including Filipino-American chefs and their influence on the city's food scene.

How Black and Jewish communities collaborated in music, film and activism from the 1920s to the 1950s.

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

Exploring the family trees of musicians Lizzo and Flea.

Tracing the 1960s "Grand Alliance" of Black and Jewish communities in the fight for civil rights, highlighting activism, collaboration and the tensions that tested their solidarity.

Examining the Black and Jewish alliance from the 1970s onward, including political gains, global tensions, rising hate and the enduring lessons of solidarity.

Norm teaches the apprentices how to lay a sill on the new foundation; Richard scopes the sewer to see what might be lurking inside; Kevin, the homeowners and their designer start in on a plan to create a sleek, modern space.

Twenty-four hours a day, the latest national and international stories as they break.

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

Tracing the 1960s "Grand Alliance" of Black and Jewish communities in the fight for civil rights, highlighting activism, collaboration and the tensions that tested their solidarity.

Examining the Black and Jewish alliance from the 1970s onward, including political gains, global tensions, rising hate and the enduring lessons of solidarity.

The story of how Frederick Douglass, a man born into slavery, became one of the most prominent statesmen and influential voices for democracy in American history.

A Cartier sapphire pendant circa 1915; a 1963 C.F. Martin D-28 guitar and case; a Paul Revere Jr. silver pitcher and diary circa 1775.

An emerald, diamond and gold necklace circa 1875; New Orleans Jazz & Heritage Festival posters; a 1962-1966 Stewart "Smokey" Stover collection.

Muffy worries she is no longer needed when her friends plan a successful bake sale without her; Arthur stands up for Mrs. MacGrady.

The agents are called upon when a lost Baby Laser Chicken is found in the Austrian countryside; clocks stop working when the Odd Squad Timekeeper is struck with oddness.

Learn about the world of chameleons.

The Hunters learn how temperatures can affect outdoor plants and gardens.

Lyla, Everett and her sisters build makeshift carnival games for their brother, Luke, using household and recycled materials; Louisa seeks help to create a special beat for her school presentation.

Arugula and Carl go on an adventure as archaeologists; Carl spots a UFO on Mother's Day.

Teacher Daniel plays school but his student, Baby Margaret, just won't cooperate; Daniel, Prince Wednesday and Chrissie play at the castle, but they just can't agree on what to play.

Phoebe, Jay and Lupe practice their fire safety plan when the fire inspector visits; Phoebe and Jay buy juice from Mr. Aguilar.

Elmo, Chris and their friends on Sesame Street dress up as dinosaurs; with help from Elmo's book, they learn facts about dinosaurs.

Devonte J. Squirrel moves to the Treeborhood; Devonte and the Wombats create a machine that makes ice cream using a bike.

Donkey wonders if she and her cousin can have fun together since they don't like doing the same things anymore; Panda thinks about how he is different from other pandas.

Rosie, Javi and Papa go on an adventure when Javi's dragon gets lost in the city; Rosie looks for blue bonnets in the country.

Elinor and her friends volunteer to help Mr. Raccoon put up a sign for his bakery, but the sign keeps blowing away; it's Plant Day at school and when Elinor gets a cactus, she's a little disappointed at first.

André avoids a spooky movie night; Alma, Eddie and Junior write a hero song for Papi.

Trini offers to puppy-sit Tooey's newest sled dog, Khi, but ends up teaching him some bad habits; Molly makes a book about female pilots.

Xavier, Yadina and Brad learn a lesson about treating everyone equally when they meet Rosa Parks; Thurgood Marshall shows Xavier how to be fair with everyone when it comes to a big piece of pie.

Elmo, Chris and their friends on Sesame Street dress up as dinosaurs; with help from Elmo's book, they learn facts about dinosaurs.

Teacher Daniel plays school but his student, Baby Margaret, just won't cooperate; Daniel, Prince Wednesday and Chrissie play at the castle, but they just can't agree on what to play.

Minnesota items first appraised in 2004 include one whose value is at its highest ever at $2-3 million.

The four remaining cooks prepare two dishes inspired by their friends and families.

When a young barman from The Maid in Splendour pub is found shot dead, Barnaby and Scott uncover a web of romantic intrigue involving several members of the bar staff.

Jean wants to get on the Internet; Lionel learns that he is broke.

Richard tells Hyacinth that he had a new alarm installed as an anniversary present, only he's forgotten the code.

What happened to Wolfgang Mozart's older sister and collaborator, Maria Anna, a musical prodigy in her own right.

The foundation of the house has no footings, so Mark McCullough pours a buttress; Kevin visits the 2001 Manchester by the Sea project; back at the house, Richard solves a ductwork puzzle while Kevin and Tommy install a PVC trim overhang.

News. Reporting on the day's international news from London and from BBC correspondents around the world.

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