Unforgotten, Season 5: What We Know So Far About Renewal & Premiere Dates

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cassie and sunny in unforgotten at pub

After a three-year gap between seasons 3 and 4, Unforgotten fans will be pleased to know the show is not only renewed for season 5, but it's due to arrive on our screens within the next year or so. Those who've seen season 4 may understandably have mixed feelings about a fifth season, but it will be interesting to see what that new season looks like. 

Spoiler alert: Keep in mind that some big things happened in season 4, and while we haven't mentioned those things YET, it's all but impossible to discuss the upcoming season 5 without mentioning a few details that could spoil your enjoyment of season 4. If you aren't caught up, we recommend not reading ahead unless you don't mind spoilers.

What's Unforgotten About?

For those who haven't seen it, Unforgotten follows a pair of London detectives as they solve serious cold cases involving things like murder and disappearances. DCI Cassie Stuart (Nicola Walker) and DI Sunny Khan (Sanjeev Bhaskar) play the lead roles, and each series follows a single case that carries over between episodes. 

The series is unlike some crime dramas in that it also follows the emotional impact of the crime and investigation. We also see more of the investigators' own lives than in many “pure procedural” dramas. It's not just about the puzzle.

If you haven't already watched the series, you can watch it HERE on Amazon Prime Video and PBS Masterpiece in the US. In the UK, Unforgotten airs on ITV and ITV Hub.

What's Happening in Season 5 of Unforgotten?

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Sunny and Cassie in a previous season of Unforgotten

Reminder: This is your last chance to look away before learning things you might not want to know about season 4 of Unforgotten.

Season 5 of Unforgotten will follow the devastating season 4 finale where Cassie was in a car accident and died of a brain injury. Given that so much of the series revolved around the close relationship between Cassie and Sunny, it's hard to even imagine how the show will continue without becoming a shadow of its former self.  

Back in the fourth season, we saw Cassie returning from sick leave after a mental breakdown from the trauma of everything in her life. The case she'd worked was intense, and her father was diagnosed with dementia. The new case for the season focused on the murder of Matthew Walsh, a man whose headless body had been found in a trash pile.

We learned that Walsh wasn't exactly an innocent, and he had committed a few of his own horrific crimes before meeting his bad end. He had killed the brother of a suspect, and that turned out to be the reason for Walsh's murder. 

Unfortunately, before the truth came out, Cassie was hit by a speeding car and suffered a major head injury. As she was in hospital, Sunny went on to finish the investigation. Sadly, Cassie would die in surgery in the emotional season finale. 

Few details about the upcoming season 5 have been made available, but writer Chris Lang has mentioned in a PBS interview that the new season will be the most political one so far. He said: 

It's the most political of the story so far, ‘political' with a small ‘p.' It really addresses where the UK is as a country politically, and it obviously introduces a new partner in crime for him, which is just lovely and refreshing. It's a woman, and she's pretty different from Cassie, that's kind of all I can say. She's at a very different stage in her life. She's younger. She's his boss again.

Who's in Season 5 of Unforgotten?

UPDATE: On March 14th, Lang tweeted to announce that Sinead Keenan will join the series as DCI Jessica ‘Jessie' James alongside Bhaskar as DI Sunny Khan. The Irish actress has previously appeared in shows like London Irish, Lip Service, and Being Human

Of her new role, Keenan has been quoted saying: 

I’m very much looking forward to working with the extraordinary cast led by the brilliant and incredibly lovely, Sanjeev Bhaskar. And I’m hoping that if I play my cards right I might even get to take a peek in Sunny’s backpack!

Barring any possible flashbacks, it's safe to say Nicola Walker won't be returning as Cassie. Walker and Lang decided together that Cassie would meet her end in the season 4 finale, and that makes it sound like Walker was ready to move on and close out any possibilities of a return.

Walker recently appeared in the series Annika, based on the BBC Radio 4 play Annika Stranded. The TV adaptation sees Scandinavian detective Annika Strandhed (Walker) solving crimes in the Scottish Highlands.

But what about the rest of the Unforgotten cast? 

We can also expect to see the likely return of Jordan Long as DS Murray Boulting, Colin R. Campbell as DSI Clive Andrews, Lewis Reeves as DC Jake Collier, Carolina Main as DC Fran Lingley, Georgia Mackenzie as Dr. Leanne Balcombe, Janet Dibley as Jenny, and Michelle Bonnard as Sal, Sunny's romantic life partner.

There's no word on whether some of the recurring characters from Cassie's personal life will return in any fashion. It would be nice to get proper closure on all those little threads. 

When Does Season 5 of Unforgotten Premiere?

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Season 5 of Unforgotten is likely to air in late 2022

Filming for the new season began a couple days ago (mid-March 2022), so it's too soon to have a precise date for the premiere of season 5. Based on the filming date, our best guess would be late 2022. Granted, the world has been a bit unpredictable the last couple of years, so there's no telling what might happen between now and then.

In the UK, expect to see season 5 of Unforgotten on ITV. In the US, it's likely the new season will air on PBS and PBS Masterpiece as the previous seasons have. 

Will You be Tuning in for Unforgotten, Season 5?

After the way the last season ended, some people have sworn off Unforgotten for good. Are you one of them? Or will you be tuning in to see what the new partnership is like? 


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  1. I for one need to catch up and watch from the beginning. I have a very special reason to be watching season 5

  2. I’m not sure I will watch the 5th season. Somehow it feels disrespectful to Sunny that they are replacing Cassie instead of making him DCI and boss of the unit. He was acting DCI when Cassie was on sickleave and did well as far as I can understand it. Honestly, it feels a little unimaginative to just replace Cassie with a new DCI instead of allowing Sunny to grow.

  3. Yes, I will watch the fifth season of Unforgotten, this is one of my favorite shows. I just started to watch it one day and it turned out to be so good and I got hooked. Love the opening credits song. So glad it is still going to continue. Keep up the good work and the good acting! Loved Nicola in MI-6 and Sanjeev in the Indian Doctor.

  4. I will definitely be watching! Great series, super actors, superb writing! I like being drawn into a story, being pulled in by emotions! Like being taken along for the ride! Thank you for Season 5, looking forward to it.

  5. I live in the U.S. and binge watched this to get caught up and LOVE the stories and characters. I will be watching and waiting for Season 5 to start. I am now binge watching Broadchurch- another good one and starting season 3. I think I am now hooked on British dramas- would love some suggestions on more to watch.

    • Vera, Midsomer Murders, Shetland, Line of Duty, Death in Paradise, DCI Banks, Scott and Dailey…just a few to get you started.

      • They are all excellent. However, what has happened to new episodes of Shetland. It stopped midway on 6 and that was that. It said that new episodes air every Thursday, but that hasn’t happened. Maybe I can’t get it in the US.

  6. This series is so deep and well acted. I, too, have been in law enforcement for 30+ years. So I can relate to the sheer exhaustion that Cassie felt the last 2 seasons. It takes a lot out of you when so many people depend on you…sometimes you don’t want to be the strong one anymore. There’s no way to “leave it at the office” totally. Love this show.

  7. PLEASE PLEASE PLEASE pick up the new tv adaptation from Inbetweeners producer Fudge Pach & Ocean Independent DCI Jim Daley 8 episode series giving RORY MCCANN his first leading manrole!

  8. This was a binge watch for, as most British shows have been, and while Cassie was such a force in the show, I absolutely will keep watchung.

  9. Great writing by Chris Lang and the cast in the series give unforgotten depth and feeling rarely seen these days.more power to your pen Chris you nail it so well.

  10. My wife and I will definitely be watching (assuming we are still around). We will definitely miss Nicole in her Cassie role, but we loved and appreciated Sanjeev as the frame for his partner’s genius. Whomever is chosen for his new partner/boss will be fortunate. Much luck to the Unforgotten team.


  12. Can’t wait for my favorite PBS series to start playing again! Guess I must wait. Who will be the new boss? Oh, such a interesting and mesmerizing show! Keeps me on my toes asking questions.

  13. Definitely will keep watching. Such a thought provoking series. I was heartbroken over Cassie’s death but I am looking forward to what comes next. Love the show.

  14. Was sorry to see Nicole will be gone. I will watch future shows to see new partner. Wish there was not such a long wait

  15. We will definitely watch, love Sanjeev. Just hope they get who he is paired with right as Nicola a big act to follow. Imo she made a very bad decision in leaving as Annika was beyond dreadful and would definitely never watch that again but respect her right to choose. Can’t wait for series 5 ❤️

  16. I will be back. The series is so well done, with intense and engaging stories. Even though Cassie is gone, I think Sunny and the rest of the team with a new partner (and boss) will keep me watching.

  17. I was very sad that she died but I really like the rest of the character. Especially sunny so I will continue watching it hopefully it will be as good as the other ones have been I’m a fan of the program

  18. I will watch Unforgotten for as long as it airs. Don’t know that there’s anyone who can replace Nicola Walker! Will continue to watch for Sanjeev Bhaskar and the rest of the cast – hopefully they’ll ALL be back! Love the show!!

  19. Absolutely! I’d also like to give “Annika” a go but so far it hasn’t been offered in the states.

  20. I’ll watch, for sure. I’ll miss Cassie, of course, but there should still be lots of interesting plot and well acted characters!

  21. Love Sunny so much, I’ll be back. I hope he’s allowed more of the spotlight in case I don’t like Nicola’s replacement, as in who could possibly replace her??

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