TV tonight: five sisters fight for justice after a shocking murder in Belfast

A family continues its search for answers following a devastating killing. Plus: Hannah Fry investigates the future of superintelligence. Here’s what to watch this evening

9pm, BBC Two In 2005, Robert McCartney was beaten up and stabbed to death in a gang attack outside a Belfast city pub. After that, witnesses (there were about 70) remained silent and evidence was destroyed. But Robert’s five sisters and fiancee continued their fight for answers – including finding out what happened to a survivor of the attack. This documentary follows their journey. Hollie Richardson

7.30pm, BBC Two She was a rubbish celebrity traitor, but Prof Hannah Fry is back doing what she does best: digging into the big facts, this time about the future of superintelligence. Could AI pose an existential crisis to humankind? It’s a mammoth topic and Fry is the right person to investigate. HR

8pm, BBC One To Borneo, where four celebrity pairings will be waving unwieldy maps at bewildered locals as they head in the general direction of Australia. It’s as gently likable as ever: Jeff Stelling and son Matt, Ella Eyre and bestie Nana, Princess Andre and brother Junior, and Sam Ryder and manager Kaz are our coconut-picking, taxi-haggling contenders. Phil Harrison

8pm, BBC Four Conquering the Alps is no mean feat, but in 15BC Emperor Augustus drove a direct route through them. Little was known about the campaign, which happened over a single summer, but now archaeologists and ballistic experts piece together the weapons used and a team of volunteers reconstruct the Romans’ march. Hannah Verdier

The brilliant Asim Chaudhry is this week’s guest star in the second season of Ellie White and Natasia Demetriou’s cracking sketch series. There’s bizarre fun with a driving lesson, a gameshow called Find the Snakes and a bunch of battling politicians. HR

10pm, Channel 4 “I’m like Mother Teresa. With fake tits!” Daniella, the Essex firecracker, tells Fred. A new series begins with the 23-year-old TikTok relationship influencer meeting her potential match in Joey (also from Essex). Meanwhile, Meryl (from the first season of The Traitors) is searching for a partner as she hits the big 3-0. Priya Elan

The Monkey (Osgood Perkins, 2025), 10.40pm, BBC One

Osgood Perkins made 2024’s scariest movie in Longlegs, but his follow-up, based on a Stephen King short story, is a raucous comedy-horror with more laughs and more life wisdom. Theo James plays twins whose traumatic family inheritance resurfaces in the form of a cursed wind-up monkey. Whenever someone is foolish enough to turn its key, a spectacularly gruesome death ensues. This leaves the twins with a dilemma: how to go on living when death is all around? EEJ

EFL Cup: Liverpool v Chelsea, 7.30pm, ITV1 The fourth-round match at Anfield.