TV Guide Eden Wednesday

In 1930, recovering from a personal crisis, Agatha Christie fell in love with and married Max Mallowan. This relationship, and the security it brought, saw Agatha enter the most prolific and successful chapter of her career. This would be the period in which Agatha penned some of her most famous and enduring bestsellers, including Murder on the Orient Express. Lucy follows in Agatha's footsteps to discover the roots of these works and explores how, in later life, Agatha achieved global celebrity - but remained very much the anonymous observer, hiding in plain sight

An examination of the dark history behind Britain's fascination with murder, beginning with historian and curator Lucy Worsley exploring how notorious killings were transformed into popular entertainment in the first half of the 19th century

In the second programme, the historian explores how science and detection influenced the popular culture of murder during Victorian times. Writers including Charles Dickens and Wilkie Collins were fascinated by grisly crimes, and the literary genre that came out of it captured the imagination of readers. The presenter also reveals that when Jack the Ripper began his reign of terror in London at the same time Robert Louis Stevenson's Dr Jekyll and Mr Hyde was published, the idea of the serial killer was introduced to the British public

On the evening of December 3, 1926, Agatha Christie left her home in Sunningdale, Berkshire, in her Morris Cowley. Ten days later, Agatha was discovered in a hotel in Harrogate, claiming to have lost her memory. Lucy Worsley delves into this traumatic, watershed moment in Christie's life. She visits the key locations, from the chalk pit where Agatha crashed her car to Abney Hall, the grand house where she took refuge (and which would inspire several of her books)

The latest stage of Michael Portillo's trek takes him past lochs and castles on the Far North Line to Britain's northernmost railway station at Thurso. From Lairg on the banks of Loch Shin, Michael heads for a secret conservation area in the 18-mile-long loch to track down one of Scotland's most elusive and endangered species, the freshwater pearl mussel

The actor arrives in New York to explore Manhattan Island, and its Empire State Building, from where he can see the city's 500 miles of coastline and more than 40 islands. He later takes the ferry to Ellis Island, which opened in 1892 as an immigration centre for those arriving in the US by sea. Following a trip to Coney Island, home to the iconic amusement park, he explores Martha's Vineyard more than 200 miles away, where Jaws was made. Martin ends his trip in Maine, America's most easterly state, with hundreds of islands off its coast

Part one of two. The comedian travels along one of the world's most contentious borders, visiting places in America and Mexico to find out what life is like on both sides. Sue starts her journey at the western end of the border in the Mexican city of Tijuana, where she helps Honduran volunteers building a hostel for fellow refugees fleeing violence in their country

Part two of two. Sue visits the city of Juarez, which adjoins El Paso on the other side of the border, the two effectively forming a single large city spreading across two nations. A 57-mile section of border wall runs through the two cities, but does not stop thousands of people coming and going across every day. Sue confronts her fear of horses to try out a Mexican form of dressage and meets a woman living in the US who has been separated from her husband, who is not legally allowed to enter the US

David Attenborough investigates what rising temperatures will mean for people and wildlife in the polar regions, and how changes there could affect the rest of the planet. He discovers polar bears in the Arctic are going hungry as the sea ice they hunt on disappears, and accompanies scientists studying waterfalls of meltwater in Greenland that are leading to a rise in global sea levels. From the Antarctic there are images of the break-up of the Wilkins Ice Shelf, which covered an area the size of Jamaica

The actor arrives in New York to explore Manhattan Island, and its Empire State Building, from where he can see the city's 500 miles of coastline and more than 40 islands. He later takes the ferry to Ellis Island, which opened in 1892 as an immigration centre for those arriving in the US by sea. Following a trip to Coney Island, home to the iconic amusement park, he explores Martha's Vineyard more than 200 miles away, where Jaws was made. Martin ends his trip in Maine, America's most easterly state, with hundreds of islands off its coast

Part one of two. The comedian travels along one of the world's most contentious borders, visiting places in America and Mexico to find out what life is like on both sides. Sue starts her journey at the western end of the border in the Mexican city of Tijuana, where she helps Honduran volunteers building a hostel for fellow refugees fleeing violence in their country

Part two of two. Sue visits the city of Juarez, which adjoins El Paso on the other side of the border, the two effectively forming a single large city spreading across two nations. A 57-mile section of border wall runs through the two cities, but does not stop thousands of people coming and going across every day. Sue confronts her fear of horses to try out a Mexican form of dressage and meets a woman living in the US who has been separated from her husband, who is not legally allowed to enter the US

David Attenborough investigates what rising temperatures will mean for people and wildlife in the polar regions, and how changes there could affect the rest of the planet. He discovers polar bears in the Arctic are going hungry as the sea ice they hunt on disappears, and accompanies scientists studying waterfalls of meltwater in Greenland that are leading to a rise in global sea levels. From the Antarctic there are images of the break-up of the Wilkins Ice Shelf, which covered an area the size of Jamaica