Prime Minister Pitt calls an election and uncertainty grips the country; while Ross watches Cornwall struggle under the power of Truro's MP, George Warleggan, Demelza's infidelity leaves her torn between her husband and a lovesick Hugh on Masterpiece Poldark at 7 p.m. Sunday.
When a tragic car accident becomes something altogether more suspicious, Endeavour's investigation leads him to the Oxford astrophysics department and a television puppet studio on Masterpiece Endeavour at 8 p.m Sunday & 8:49 p.m. Saturday.
Film stars discuss their work with host Ramin Setoodeh on Variety Studio: Actors on Actors at 9:30 p.m. Sunday.
Jamestown is spooked as ghostly happenings fuel rumors that Samuel has risen from the grave; Reddick gets everyone battle-ready as news comes in of a Spanish attack on Jamestown at 10 p.m. Sunday.
An extravagant house party at the Abbey gives the Crawleys a chance to reconnect with old friends, but some guests prove more welcome than others, and along with the celebrations come deceit and heartache on Downton Abbey at 11 p.m. Sunday.
Negotiating differences between religion and belief through drag shows, passion play, political action and partnership in a small Arkansas town on POV The Gospel of Eureka at 9 p.m. Monday.
Activist Joey Mataele, co-founder of the Tonga Leitis Assoc., organizes a beauty pageant, mentors a young leiti rejected by her family, and works with fundamentalist Christians regarding Tonga's anti-sodomy and cross-dressing laws on Pacific Heartbeat Leitis in Waiting at 10:30 p.m. Monday.
Historian James Holland explores how amphetamine use affected the course of World War II on Secrets of the Dead World War Speed at 7 p.m. Tuesday.
Investigative journalists recall the events that led to the Tiananmen Square massacre of 1989 on Tiananmen: The People Versus the Party at 8 p.m. Tuesday.
Over the course of two years, a Pakistani woman fights for the rights of DACA recipients, her parent's immigration status and the certification of her marriage to a U.S. citizen on Dream With Me at 10 p.m. Tuesday.
Documentary filmmakers Chapman and Maclain Way talk about their Emmy Award-winning documentary Wild Wild Country on On Story at 11 p.m. Tuesday.
Some of the Amazon's secrets include boiling streams, crystal clear lagoons, pink river dolphins and a strange new reef on Rivers of Life The Amazon at 7 p.m. Wednesday.
Neil Armstrong's family and friends recall his achievements before and after the Apollo 11 moon landing, including his role in the inquiry into the Challenger disaster and his efforts to encourage young people to explore space and flight on NOVA First Man on the Moon at 8 p.m. Wednesday.
Bill Nye advocates the importance of science, research and discovery, taking on deniers of climate change, evolution and a science-based world view on POV Bill Nye: Science Guy at 9 p.m. Wednesday & 8 p.m. Friday.
Country singers Margo Price and Hayes Carll sing songs from their albums Midwest Farmer's Daughter and Lovers and Leavers on Austin City Limits at 10:30 p.m. Wednesday & Friday.
Filmmaker Robert Rodriguez discusses some of his work, including Sin City, Spy Kids and Alita: Battle Angel on Overheard With Evan Smith at 7 p.m. Thursday.
Host Hari Sreenivasan explores topics such as technology, scientific discovery and innovation on SciTech Now at 7:30 p.m. Thursday.
The American College of the Building Arts; the old tradition of rice harvesting; a traditional gourmet dinner at Revival; a tour of the haunted Old City Jail in Charleston, S.C.; the Gullah tradition of sweetgrass basket weaving on Samantha Brown’s Places to Love at 8 p.m. Thursday.
Lavender; historic courthouse used in the film True Grit; buggy museum; brewery; traditional 9-pin bowling with German residents of Blanco, Texas on The Daytripper at 8:30 p.m. Thursday.
The body of a farmer is found in the middle of a stone circle and suspicion leads to a group of druids on Midsomer Murders The Sleeper Under the Hill at 9 p.m. Thursday & 10:19 p.m. Saturday.
Lady Felicia and Mrs. McCarthy are taken hostage when a midnight train robbery goes awry on Father Brown The Great Train Robbery at 10:39 p.m. Thursday.
American Graduate: Getting Austin Talent to Work at 7:30 p.m. Friday.
New evidence suggests that many of Leonardo da Vinci's ideas can be traced to other scientists, as far back as 1,700 years on Secrets of the Dead Leonardo:The Man Who Saved Science at 9:30 p.m. Friday.
Soul and gospel performances by CeCe Winans and St. Paul and The Broken Bones on Austin City Limits at 7 p.m. Friday.
A new musical director for the bell-ringers of St. Mary's leads to discord, disharmony and the blood-curdling sound of murder on Father Brown The Passing Bell at 8 p.m. Friday.