Dancing on Ice  
Sun 6.25pm, ITV1

After eight weeks, 12 celebrity hopefuls have been whittled down to four finalists: Radio 1’s Adele Roberts; Olympic hero Greg Rutherford; Made in Chelsea’s Miles Nazaire; and Corrie actor Ryan Thomas. The semis split viewer opinion over the use of wires to send skaters flying around the rink – it’s hard to get much skating done like that – but, back down on the ice, Miles is the bookies’ favourite.

Forensics: The Real CSI  
Sun 9pm, BBC Two

When a freezer is brought to a local dump after a flat clearance, staff find that there is a truly horrible surprise inside: a decomposing body. In this behind-the-scenes doc, we follow West Midlands Police forensics experts as they try to find out who the deceased was, how they died, and who might be responsible – which gets more complicated when it turns out that a friend of the person who died knows quite a lot more about it than first thought.

Oscars Live  
Sun 10.15pm, ITV1

Whether you are hoping Oppenheimer will blow away the competition or just wondering whether anyone’s going to get clouted around the head again, good news: for the first time in two decades, you’ll be able to see all the action as it happens. Hollywood’s biggest night is, finally, being shown live on British TV again. Jonathan Ross anchors an Oscars party that promises chat with famous movie fans before leading into coverage of the show itself.  

Accused: The Hampstead Paedophile Hoax  
Mon 9pm, Channel 4

Christ Church in Hampstead, north London, was known mostly for being where Clement Attlee married his wife Violet in 1922. Then, in 2014, the church and the school across the road became – according to conspiracy theorists – the centre of a satanic cult, where 175 paedophiles feasted on the blood of children. Obviously, it wasn’t true. But it turned into a very real terror for the people accused, with very real victims – including children coerced into telling the fantasists’ lies for them.

Snow Going Back: Comic Relief vs the Arctic  
Mon 9pm, BBC One

Dragons’ Den’s Sara Davies, Geordie Shore alumnus Vicky Pattison, former England footballer Alex Scott and Love Island presenter Laura Whitmore set out from Trømso in Norway to do the traditional arduous celeb challenge in the name of charity. The goal: circumnavigating Markusfjellet Peak over 50km and four days’ skiing, snowshoeing and biking across the Arctic tundra, where temperatures can go as low as minus 40°C, winds can gust up to 100mph, and all while lugging 20kg of kit behind them.

Love Rat  
Mon 9pm, Channel 5

This four-part drama stars Sally Lindsay as Emma, who has escaped to Cyprus to take her mind off a particularly unpleasant divorce from Pete, played by Neil Morrissey. That is where she bumps into dishy, suave Niko (Casualty’s Gerald Kyd) and they get caught up in a whirlwind romance. It looks like Niko has it all, especially when he shows off a flash pad he is interested in buying. Only problem is, he needs a bit of cash to get it nailed down – £200,000 would do it. Emma gives him the money, and Niko scarpers. Emma doesn’t take that lying down, though. Soon she has enlisted Pete to exact revenge.

Interior Design Masters with Alan Carr  
Tues 8pm, BBC One

The fifth series of the Bake Off-but-with-wallpapering competition opens by sending its 10 contestants into a former convent in Norfolk, praying that their visions to turn the nuns’ old quarters into chic B&B rooms impress judges Michelle Ogundehin and Abigail Ahern. Later in the series they’ll be giving a new lick of paint to activity centres at Chester Zoo, reworking holiday lodges at Blenheim Palace and putting their own spin on the changing rooms at Wembley Stadium.

Saving Lives at Sea in World War II  
Tues 9pm, BBC Two

This special celebrates the bicentenary of the Royal National Lifeboat Institution by telling the story of its wartime heroics. At a time of death and destruction, the RNLI was sometimes at odds with public opinion in its mission to save lives with no regard for nationality, and Dermot O’Leary explores how volunteers were pitched into the war during the Battle of Britain and the evacuation of Dunkirk, speaking to descendants of wartime crew members and putting out to sea in a historic lifeboat to get a feel for what they went through.

Royal Kill List  
Tues 9pm, Sky History

It is 1660, and after the restoration of the monarchy, Charles II is in the mood for revenge in this historical drama. There is a slightly unusual spin on the telling here, with Chernobyl’s Jared Harris voicing the regicides, Sheila Atim the royalists and Joseph Fiennes Charles II himself, alongside splashy historical reconstructions. There is a slightly Guy Ritchie-ish lilt to the script – “A spot of hunting is in order,” Fiennes says at some point, “regicides are in season” – and it launches into the chaotic, paranoid period with relish.

The Idaho Murders: Trial by TikTok  
Weds 9pm, BBC Three

Early in the morning of 13 November 2022, in the small town of Moscow in Idaho, Xana Kernodle and her boyfriend Ethan Chapin got home after a party at a frat house. Best friends Kaylee Goncalves and Madison Mogen joined them, having been to a sports bar. By the morning, all four university students had been stabbed to death. The shock of their murders snowballed and led armchair detectives to try to solve the case themselves. Zara McDermott goes to Idaho to investigate why the case became so huge, and why true crime has such a hold over certain corners of social media.