Unforgotten series 4 confirmed by ITV with Nicola Walker and Sanjeev Bhaskar

Unforgotten will return for a fourth series, ITV has announced.

Produced by Sally Haynes and Laura Mackie’s Mainstreet Pictures, the new series will see BAFTA award nominees Nicola Walker (Last Tango In Halifax, The Split) and Sanjeev Bhaskar (Goodness Gracious Me, Paddington 2) reprise their roles as DCI Cassie Stuart and DI Sunny Khan as they investigate another emotionally charged and compelling cold case.

Praised for its realistic portrayal of a police procedural, empathetic approach and powerful performances, each series of Unforgotten follows the unravelling of a historical crime.

The new six-part series will once again be penned by creator Chris Lang (Innocent, Dark Heart) and directed by Andy Wilson (Ripper Street, Endeavour), both of whom have worked on all three of the previous series. Guy de Glanville (Unforgotten, Age Before Beauty) will also return as producer.

Writer and Executive Producer Chris Lang said: “I am so delighted to have been asked to make a fourth series of Unforgotten.

“The reaction to series 3 was better than I could ever have expected (with more people watching the last episode than any other in all three series) and I cannot wait to discover what lies ahead for Cassie and Sunny, and to create a whole new cast of characters for them to grapple with.”

The new series has been commission by ITV’s Head of Drama, Polly Hill, who said: “We have been delighted with the reception of the first three series of Unforgotten and are thrilled to commission a fourth instalment.

“Chris Lang’s writing is incredibly powerful and his storytelling utterly compelling, so we have no doubt that the new case will have viewers gripped again.”

Executive Producers Laura Mackie and Sally Haynes added: “Unforgotten has gone from strength to strength and we were so pleased to see the audience grow for the third series.”