Who is in the Unforgotten series 4 cast and what can we expect from the new series of the ITV drama?

The fourth series of the ITV drama Unforgotten finally returns tonight

Unforgotten promotional shot showing Nicola Walker and Sanjeev Bhaskar
(Image credit: ITV)

Unforgotten is returning back to ITV tonight, so here is everything that you need to know ahead of the show’s return, including the cast of Unforgotten series 4. 

Unforgotten began in 2015 and had three incredible series. The third season aired in 2018 and fans have been patiently waiting for their fourth helping of the amazing crime drama. Thankfully, their wishes have been granted and the fourth season of the drama is airing tonight at 9pm! We've been busy binging on Netflix's psychological drama, Behind Her Eyes and the addictive Firefly Lane, but that doesn't mean there's no time for this latest addition to our TV schedule. 

So what can we expect from the fourth installment of Unforgotten? Who’s in it? What even happened three years ago in the last series? When is it on?? Don’t stress. We have all of the answers to your questions ahead of tonight’s launch.

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Who is leading the cast of Unforgotten Season 4?

Obviously, DSI Stuart did not manage to retire as Nicola Walker will be reprising her role as DSI Cassie Stuart, the main detective in the series. Sanjeev Bhaskar will also be returning as DI Sunny Khan. Other members of the supporting cast such as, Jordan Long as DS Murray Boulting, Peter Egan as Martin Hughes, Carolina Main as DC Fran Lingley and Lewis Reeves as DC Jake Collier will be returning to their roles.

The recurring cast will also be joined by some new faces. Sheila Hancock (New Tricks, Delicious), Susan Lynch (Killing Eve, Apple Tree Yard), Phaldut Sharma (Hanna, EastEnders), Liz White (Life On Mars, Ackley Bridge), Andy Nyman (Wanderlust, Peaky Blinders), Clare Calbraith (Baptiste, Little Boy Blue) and Lucy Speed (Marcella, National Treasure) will all be joining the cast for this season. 

Unforgotten

(Image credit: ITV)

What happened in the last season of Unforgotten?

Each season of Unforgotten features a new storyline that focuses on a cold case. The third season’s main story arc focused on tracking down a murdering paedophile who buried his young victim on side of a motorway. 

At the end of the season, the main detective DSI Cassie Stuart (Nicola Walker) was living with her aging father and suffering mentally from the job she held for nearly 30 years. In this final scene, she chats to her partner DI Sunny Khan (Sanjeev Bhaskar) and discusses taking some time off work and possibly retiring. The series ended by DSI Stuart and DI Khan laying some flowers at the new grave of the main victim of the series.

What’s the plot of Season 4 of Unforgotten?

Every series of Unforgotten begins in the same way. A body, that has been dead for decades, is discovered and the team must investigate the cold case that surrounds these remains. However, in this series, it appears that DSI Cassie Stuart is returning back to work - reluctantly. 

ITV states, “Cassie faces an impossible dilemma when she learns she isn’t entitled to her full pension payment unless she completes her thirty years of service. Disappointed and angry with her superiors and the system, Cassie has to make the gut-wrenching decision to return to work.”

ITV also revealed about the main plot, “The fourth series opens with the discovery of a dismembered body in a scrap metal yard, which the team believes has been stored in a domestic freezer for thirty years. A unique Millwall Football Club tattoo leads to the victim being identified as Matthew Walsh, a young man in his mid-twenties who went missing in March 1990.”

Is there a trailer for the fourth season of Unforgotten?

Yes, there is a trailer for the fourth season of Unforgotten. Although the trailer doesn’t give too much away, the next installment of the series looks to be just as gripping as the first three seasons of the incredible ITV drama. 

The trailer reveals that Cassie has returned to work and that Sunny is now leading the team. We see that Cassie is struggling with her own demons as she menacingly says, "there is a small bit of me that wants to punish someone." We also see a whole host of new characters who make cryptic statements that give absolutely nothing away. The short trailer gives us just enough drama and intrigue to get our hopes up for tonight's episode.