TV Tonight: Our highlights for Saturday, April 22

TV tonight Lesley Manville and Tim McMullan star
Magpie Murders is back on TV Tonight. (Image credit: BritBox)

On TV tonight, Magpie Murders continues, there's more drama in Casualty, a documentary explores the Windsor Castle fire in 1992, and there's a special tribute to Dad's Army. Here's what you shouldn't miss on TV Tonight.

  • Our hand-selected recommendations for what's on TV tonight include TV shows, a film, live sport and the latest trending need-to-binge-on-now box set 
  • Keep up to date with the latest soap spoiler storylines on TV tonight with our daily soap synopsis 
  • For more information about what’s on TV tonight see our TV Guide

What's on TV tonight

Best TV shows on TV tonight

Our expert TV journalists have picked the best things on TV tonight... 

Magpie Murders, 9:15pm, BBC One

As editor Susan (Lesley Manville) heads to author Alan Conway’s funeral, it provides a distraction from decisions about her future. She’s said she’ll think about moving to Crete with Andreas, and also about taking on the publishing company’s CEO job, but doesn’t seem keen on either. 

The action switches effortlessly from Alan’s funeral in the present to Sir Magnus’ funeral in the 1950s – at the same church, and with many actors in dual roles. Meanwhile, Susan has come to the chilling realisation that the story in Magpie Murders mirrors that of her own family. Should she be looking in her past to discover ‘whodunnit’ in the incomplete manuscript? 

★★★★ JP 

Casualty, 8:25 pm, BBC One

Charles Venn as Jacob Masters in his paramedic uniform.

(Image credit: BBC)

Let’s get straight to it. We’re worried about the future of Jacob (Charles Venn) at Holby. Since joining the paramedic team, the former ED nurse hasn’t exactly been following procedure. Tonight, last week’s rule-breaking comes back to haunt him when Teddy and Sah are trapped in a deadly hostage situation with vulnerable shopkeeper Krish. 

As the situation escalates, will another maverick move by the medic cost a colleague their life? If you like seeing Iain angry, this is the episode for you. And speaking of Iain, Faith’s love life gets the seal of approval from her children, and Jan discovers Gethin’s sad secret.

 ★★★★ ER

The Windsor Castle Fire: The Untold Story, 8:15 pm, Channel 4

The Windsor Castle fire

(Image credit: Channel 4)

On 20 November 1992, the world’s oldest inhabited castle caught fire, and over the next 12 hours up to 200 firefighters fought to bring the blaze under control. But how do you do that when pumping water into a building full of precious artwork is likely to cause almost as much damage as the fire itself? 

Using newly discovered footage, this minute-by-minute reconstruction details the tactics used by the fire service and reveals astonishing acts of personal bravery. It also steps back to argue that the huge cost of the rebuild changed the way the Royal Family was funded. 

★★★ SM

Dad's Army: 50 Years of Laughs, 7:45 pm, Channel 5

Dad's Army

(Image credit: BBC)

Yes, it’s been on before, but that’s only fitting for a history-plus-gossip documentary on TV’s most durable (and surely most repeated) show. There are lots of clips, background on the cast and stories about who nearly didn’t take the gig  – and who did, with some regrets. For real fans, the 1971 film is showing on Friday on Film4 in the ‘guilty pleasure’ afternoon slot (2.30pm).

★★★ SM

Best box set on TV tonight

ObsessionNetflix

The promotional image from Netflix's Obsession

(Image credit: Netflix)

From the Regency romp Bridgerton to the saucy shenanigans of Sex Education, Netflix is developing a reputation for spicy television, and this four-part erotic thriller might be it's most lustful yet. The Stranger’s Richard Armitage and Happy Valley’s Charlie Murphy star in the intoxicating tale of top surgeon William Farrow, who becomes infatuated with his son’s fiancée, Anna (this adaptation of Josephine Hart’s novel Damage delves further into Anna’s story than the 1992 film starring Jeremy Irons and Juliette Binoche). 

Filled with lies, deceit and plenty of bedroom antics, it’s a compelling look at the destructive power of forbidden desire. 

★★★★ SMA

Best film on TV tonight

Blueback, 6 pm, Sky Premiere

Mia Wasikowska scuba diving

(Image credit: Screen Australia)

Tim Winton’s children’s novel is the inspiration for this family-friendly eco-warning drama. Abby and her mother Dora live in a beautiful bay in Western Australia, where they dive, search for abalone and befriend a blue groper fish they name Blueback. 

But a developer’s plans to mine the natural resources spur them to get the area declared a nature reserve. Mia Wasikowska (as adult Abby), Radha Mitchell and Eric Bana are the big names in this gentle drama which has mesmerising underwater photography and a convincing animatronic fish. 

★★★ NT

Live Sport

  • FA Cup: Manchester City v Sheffield United (Kick-off 4:45 pm), ITV1
  • EFL: Preston North End v Blackburn Rovers (Kick-off 5:30 pm), Sky Sports Main Event

If you watch just one thing on TV tonight…

Don't miss Magpie Murders on TV tonight.

Not found anything you want to watch on TV tonight? Check out our TV Guide

Happy viewing!

Lucy Buglass
Senior Staff Writer

Lucy joined the WhatToWatch.com team in 2021, where she writes series guides for must-watch programmes, reviews and the latest TV news. Originally from Northumberland, she graduated from Oxford Brookes University with a degree in Film Studies and moved to London to begin a career writing about entertainment.

She is a Rotten Tomatoes approved film critic and has a huge passion for cinema. She especially loves horror, thriller and anything crime-related. Her favourite TV programmes include Inside No 9, American Horror Story, Stranger Things and Black Mirror but she is also partial to a quiz show or a bit of Say Yes to the Dress