TV Tonight: Emily Watson stars in blockbuster Dune prequel | Television

Dune: Prophecy

9pm, Sky Atlantic
Emily Watson stars in this major prequel to the blockbusters, set more than 10,000 years before Timothée Chalamet arrives on the scene. She plays Valya Harkonnen, the mother superior of an order on Wallach IX, who vows to protect the Sisterhood (which will become the Bene Gesserit, the superhuman, all-female “mental and physical school”) along with her sibling, Tula (Olivia Williams). Thirty years later, a royal wedding that is part of their plan is threatened. Hollie Richardson

Panorama: Can scientists save the world?

8pm, BBC One
Carbon absorbing mechanical trees? Sky-lighting machines? These are just a few of the innovations that reporter Richard Bilton investigates as he meets the scientists trying to find solutions to the climate crisis. They claim they work but need investment to be effective on a mass scale. HR

Immigration: How British Policy Failed

9pm, BBC Two
The final episode is a bumpy trip down memory lane in one of Theresa May’s “go home” vans as we revisit the politics of “hostile environment” and the rise of Ukip. Several key players are interviewed, but will anyone suggest that immigrants have been scapegoated for a more fundamental failure of policy? Ellen E Jones

Jason Watkins & Lady Jane Grey: A Tower of London Special

9 p.m., channel 5
Not only does Bafta-winning actor Jason Watkins believe he is related to the royal courtier who oversaw the beheading of Lady Jane Grey; he also reckons he is connected to Jane Austen. Historian Tracy Borman helps him get to the bottom of it all. HR

Teen Predator/Online Killer

9pm, BBC Three

Alexander McCartney, a 26-year-old Northern Irish man who used catfishing techniques to become a prolific online child abuser, was jailed for life last month. This triple bill describes how he was brought to trial. It begins in 2019, where a police report from Scotland turns out to be the tip of a horrifying iceberg. Graeme Dyd

The franchise

10 p.m., Sky Comedy
Jon Brown’s inconsequential but well-acted satire of the superhero blockbuster industry continues, with a shoot in Armenia causing further wobbles for visionary director Eric (Daniel Brühl). It’s time for his attentive assistants Dan and Dag (Himesh Patel and Lolly Adefope) to step in. Jack Seale