Cassie and Sunny discover that James, Tim and Chris have all lied to them.

Cassie and Sunny call James, Tim and Chris back in for questioning following the revelation that they have all lied about their whereabouts on the night of Hayley's disappearance.

Unforgotten

Cold cases, buried secrets - stream the full boxset of this hit drama

Nicola Walker, Sanjeev Bhaskar & later Sinéad Keenan star in this gripping cold-case drama. Dedicated detectives work tirelessly to unravel long-held secrets.

unforgotten

When a skeleton is unearthed, a car key is the only clue to the victim's identity.

Six-part crime drama that links four seemingly unconnected suspects. When a skeleton is unearthed, a car key found near the body is the only clue to the identity of the victim.

DCI Cassie Stuart begins to identify the people mentioned in the diary of Jimmy Sullivan.

Crime drama about an unsolved murder case. DCI Cassie Stuart begins to identify the people mentioned in the diary of Jimmy Sullivan.

Cassie and Sunny visit Father Robert Greaves, hoping to identify the mysterious Jo-Jo.

Crime drama. As the investigation into Jimmy's death continues, Cassie and Sunny visit Father Robert Greaves in a bid to identify the mysterious Jo-Jo.

The investigation into Jimmy's death continues as Cassie and Sunny quiz Sir Phillip Cross.

Drama series following two detectives as they unravel a cold case murder. The investigation into Jimmy's death continues as Cassie and Sunny question Sir Phillip Cross.

Father Robert comes clean to his family and the police.

Crime drama. As the investigation into Jimmy's death continues, Sir Phillip Cross makes a difficult decision, and Father Robert comes clean to his family and the police.

Father Robert finds that revealing the truth has lasting repercussions.

Crime drama. As the investigation into Jimmy's death concludes, Father Robert finds that revealing the truth has lasting repercussions and Maureen lays her son Jimmy to rest.

Cassie and Sunny reunite when a body is found locked in a suitcase in the River Lea.

Gripping crime drama series. Detectives Cassie and Sunny reunite as they take on a case concerning the remains of a body found locked in a suitcase in the River Lea.

Detectives Cassie and Sunny begin to find out more about who David Walker was.

Gripping crime drama series. Detectives Cassie and Sunny begin to find out a bit more about who David Walker was through speaking to his ex-wife Tessa.

Enquiries into David Walker's past suggest that he was a troubled man with issues.

Crime drama series. Enquiries into David Walker's past suggest that he was a troubled man with a number of issues. Meanwhile, Marion has a prickly chat with Cassie about her past.

A disturbing allegation about David opens up a second line of enquiry for the team.

Crime drama series. A disturbing allegation about David opens up a second line of enquiry for the team. Meanwhile, Marion gets into trouble at work and jeopardises her marriage.

Crime drama series. Cassie investigates the potential abuse at the Brentford house.

Crime drama series. Cassie investigates the Brentford house and the theory that one or more of the suspects may have been abused at the gatherings that took place there.

Cassie and Sunny work on trying to prove a final theory into David Walker's death.

Conclusion of the crime drama series. Having come to another dead end, Cassie and Sunny work on trying to prove a final theory into David Walker's death and catch the culprit.

Human remains are found buried under a motorway, but who do they belong to?

When human remains are found buried in the central reservation of the M1, Cassie and Sunny begin the task of identifying them.

After unearthing Hayley's body, Cassie develops a theory that could lead to the killer.

The search for what happened to Hayley begins as the team travel down to Middenham to meet her family.

Cassie and Sunny interview four suspects, but will it lead them any closer to the killer?

Cassie and Sunny begin interviewing the four male occupants of The Spinney whilst the rest of the team look at the timelines and leads from the original investigation.

Cassie's mistake has devastating consequences for one of the suspects.

Cassie and Sunny realise the men all lied about that night and a mistake of Cassie's has devastating consequences for one of the suspects.

A new discovery leaves the team shocked and devastated.

Under the glare of the media spotlight, the team races to find the evidence to prove the identity of Hayley's killer.

When a headless body is found on a scrap heap the team identify the victim: Matthew Walsh.

When a headless body is found on a scrap heap the team identify the victim: Matthew Walsh. Cassie wants to retire but to get her full pension she is forced to return to work.

Cassie and Sunny identify four suspects who trained as police probationers together.

Cassie and Sunny identify four suspects who trained as police probationers together; two of them are still serving police officers. They have no luck finding the rest of the body. They make the discovery of Walsh's body public.

Cassie and Sunny interview each of the four suspects to see if they knew the victim.

Cassie and Sunny interview each of the four suspects to see if they knew the victim. Bouting discovers Walsh was cautioned three weeks before his death.

Cassie and Sunny discover Walsh was chased by all four suspects.

Cassie and Sunny discover Walsh was chased, and Willets realises a blood sample may have been deliberately lost.

Cassie and Sunny interview two of the suspects again and get closer to the truth.

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.

Despite a tragic turn of events, Sunny and the team narrow down the suspects.

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?

The team work to identify a severed leg discovered inside a chimney.

When a severed leg is discovered inside a chimney, the team get to work identifying the victim - meanwhile, Cassie's replacement has a rocky start with Sunny.

Forensics reveal the cause of the chimney flue victim's death.

The team work to identify the body found in the chimney flue as forensics reveal the cause of death.

Crime drama. The victim's turbulent past comes to light, and Sunny and Jess clash again.

The victim’s turbulent past comes to light. While Sunny takes a trip to Paris and Jess drops in on an unsuspecting Lord, the pair continue to butt heads.

Crime drama. Sunny and Jess's personal lives deteriorate as their suspect list grows.

Sunny and Jess’s personal lives go from bad to worse while they struggle to keep focused. Meanwhile, the suspect list grows and a mother and son are put under the microscope.

Despite the trouble in their personal lives, Sunny and Jess try to get on with the case.

Despite the trouble in their personal lives, Sunny and Jess attempt a reset as they follow the clues in the case.

Can the team bring the clues in the case together and solve it?

Can Sunny, Jess and the team bring the clues in the case together and unravel the secrets to solve it?

Unforgotten

Unforgotten

Series 3

Episode 1

Episode 2

Episode 3

Episode 4

Episode 5

Episode 6