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Courtesy of (C) Mainstreet Pictures LTD

Premieres Sundays, July 11 - Aug. 15, 2021 at 9 p.m. on KPBS TV / On Demand

Watch Seasons 1-4 now with KPBS Passport!

UNFORGOTTEN returns with the most dramatic season yet!

As Cassie and Sunny investigate a cold case with alarming links to the police force, a corpse is discovered in a scrap yard, his features frozen in time.

Four suspects emerge. All four have links to the law and attended the same police training course back in 1989. Since then their lives have gone in very different directions. Some have thrived and others have faltered.

But exactly who is fighting for justice? Can the police force ever really be trusted? And will Cassie and Sunny find themselves on the wrong side of the law?

Special Feature:

Looking Ahead to UNFORGOTTEN Season 4 - Stars Nicola Walker and Sanjeev Bhaskar will be back as the crime solving duo DCI Cassie Stuart and DI Sunny Khan, with writer/executive producer Chris Lang and director Andy Wilson back at the helm.


Episode 1 premieres Sunday, July 11 at 9 p.m. on KPBS TV - Parts of a body are found in a scrapyard and the team believes the remains have been stored in a domestic freezer for 30 years. Meanwhile, after making the decision to retire from the police force, Cassie faces a dilemma when she learns she isn't entitled to her full pension payment unless she completes her 30 years of service.

Episode 2 premiers Sunday, July 18 at 9 p.m. on KPBS TV - Cassie and Sunny identify four potential suspects who trained as police officers together, and two of them are still serving. They have no luck finding the rest of the body and decide to go public about the discovery of Walsh's remains.

Episode 3 premieres Sunday, July 25 at 9 p.m. on KPBS TV - Cassie and Sunny interview the four suspects, who all deny knowing the victim. Boulting discovers Walsh was cautioned three weeks before his death, and Collier manages to locate the rest of Walsh's body.

Episode 4 premieres Sunday, Aug. 1 at 9 p.m. on KPBS TV - Cassie and Sunny discover Walsh was chased by all four suspects on the night in question. Willets realizes Fiona's blood sample may have been deliberately lost by Liz. The pathologist identifies a cause of death implying Walsh was murdered.

Episode 5 premieres Sunday, Aug. 8 at 9 p.m. on KPBS TV - Cassie and Sunny interview two of the suspects again and get closer to the truth of what happened to Walsh. Balcombe believes she may have found the cause of death. Unexpectedly, things take a devastating turn for Cassie.

Episode 6 premieres Sunday, Aug. 15 at 9 p.m. on KPBS TV - Despite a tragic turn of events, Sunny and the team narrow down the suspects. Will they find conclusive proof of who the murder weapon belonged to and succeed in bringing Walsh's killer to justice?

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Episodes are on demand for a limited time after broadcast. Extend your viewing window with KPBS Passport, a benefit for members supporting KPBS at $60 or more yearly, using your computer, smartphone, tablet, Roku, AppleTV, Amazon Fire or Chromecast. Learn more and activate your benefit now.

Catch up! Seasons 1-3 are on demand with KPBS Passport!

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A Mainstreet Pictures production for ITV Studios co-produced with MASTERPIECE. Chris Lang is the creator and writer. Andy Wilson is the director. The executive producers are Sally Haynes, Chris Lang and Laura Mackie. Rebecca Eaton is executive producer for MASTERPIECE. The producer is Guy de Glanville.