9pm, Sky Documentaries
“Are you too powerful?” That was the question the US Senate put to Mark Zuckerberg about data concerns in 2018 – and it’s what this feature documentary hinges on. Since creating Facebook 20 years ago, he has connected almost half the world’s population. Starting from when Zuckerberg first made FaceMash at Harvard, his former fellow students and colleagues, plus biographers, tell all. Hollie Richardson
Dragons’ Den
8pm, BBC One
“You seem like a nice guy. But this is a really bad pitch.” Much as the Den can produce uplift, it can be a brutal place when an entrepreneur doesn’t have their ducks in a row. This week, a skincare company, the inventors of a credit rating app and a wild swimming enthusiast tout their wares. Phil Harrison
Secret Life of the Safari Park
8pm, Channel 4
Knowsley Safari Park in Prescot features the longest safari drive in Britain, five miles that are home to more than 700 critters from camels to capybaras and big cats. In this week’s duck-u-soap, we meet some of the residents, such as Jemima, a pregnant antelope, Maya the wolf and Twiggy the baboon. Ali Catterall
Julia
9pm, Sky Atlantic
Back at the TV studio, Julia’s return is highly anticipated – not least by new director Elaine Levitch (Rachel Bloom). But Julia is still enjoying herself in France, bickering about tarragon with Simca (Isabella Rossellini), flirting with a shirtless, shakshuka-serving young man and eating fried chicken with an Ohio heiress. Ellen E Jones
Grantchester
9pm, ITV1
Robson Green returns as detective Geordie Keating in this wildly popular 1950s whodunnit. The series kicks off with the body of a teenage biker in a field the day after a charity race. Is the local mechanic really as devastated to lose such young talent as he seems? HR
The Madame Blanc Mysteries
9pm, Channel 5
Slow-moving sleuthing and glorious scenery combine to provide a relaxing watch, with Sally Lindsay in the lead role. There’s been a murder – the victim has a diamond-encrusted cufflink and a weapon sticking out of his chest. Was he the casualty of a gangsters’ duel? Hannah Verdier
Film choice
The Eyes of Orson Welles (Mark Cousins, 2018), 11.40pm, BBC Four
These days, it’s hard to find a new angle on the heavily dissected career of film and theatre genius Orson Welles, but in this free-ranging documentary essay, Mark Cousins has managed to tease one out. Basing his profile on the Citizen Kane director’s own drawings and paintings, Cousins aims for a “sketchbook” of Welles’s life, using his own ability to capture an arresting image to pin down how Welles saw and what interested him. It’s an ambitious and personal take, but it will draw you back to his films and make you see them afresh. Simon Wardell
