Gaia: A Death on Dancing Ledge
9pm, BBC Three
“What drove Gaia to that clifftop? What was she running from? Who was she running from?” Gaia Pope was 19 when her body was found 11 days after she went missing on Dancing Ledge in Dorset – and mystery still surrounds her death. In the first episode of this intense three-parter, Zara McDermott has heartbreaking conversations with Gaia’s twin sister and mother about the week she went missing and the initial arrest of her childhood friend Nathan and his grandmother (who were released without charge). Hollie Richardson
Bake Off: The Professionals
8pm, Channel 4
“Thirty-six perfect prinsesstårtor” sounds like something from a Gilbert and Sullivan operetta, but that is what our six teams must produce under the scrutiny of the esteemed patisserie experts Cherish Finden and Benoit Blin. To make things more interesting, there is no recipe. Will they fare any better with a sculpted bread-and-butter pudding? Ali Catterall
Stories from the National Portrait Gallery
8pm, Sky Arts
The final instalment of this series illuminating the “full-system reboot” of the London gallery features the art historian Kate Bryan looking at the gallery’s most popular subject: Queen Elizabeth II. She also hears about painstaking photo conservation efforts, while a mystery guest – known to dab a bit themselves – selects their favourite portrait from the collection. Graeme Virtue
Love Your Garden
8.30pm, ITV
Alan Titchmarsh and his team head to the Kentish seaside town of Folkestone, where a family asks them to create a sensory garden for their young daughter, who has a rare form of severe epilepsy. It calls for a “quirky” design that features circular seating and a special approach to planting. HR
Sky Coppers
9pm, Channel 4
The pressure is on even more than usual this week, as the West Midlands police drone unit go in search of a woman who has left a suicide note. Elsewhere, there is an infuriating response call, as a gang who are cruelly breeding “dangerous” dogs in horrific conditions are busted. HR
From
9pm, Sky Sci-Fi
Season two of the stunningly spooky sci-fi drama opens with a double bill of vampire types, night terrors and horrific chambers. With Sheriff Boyd out of action, Donna and Kerry deal with a bus full of new residents, who ride into town and cause chaos when they realise what a terrifying place it is. Hannah Verdier
Film choice
The Blair Witch Project (Daniel Myrick and Eduardo Sánchez, 1999), 11pm, Sky Sci-Fi
Its found-footage format has now become commonplace in horror, but when this film came out in 1999, backed by a viral marketing campaign, it was hard to tell what was real and what wasn’t. Three students go into the Maryland woods to make a documentary about a local legend … and never come back. Largely improvised and filmed entirely by the actors, it relies on the unseen being as scary as the seen. It succeeds brilliantly, as things go bump – and then bumpier – in the night. Simon Wardell
