Unforgotten Season 1 Episodes
Season 1 Episode Guide
Episode 1 - Series 1, Episode 1The discovery of a skeleton in the cellar of a demolished building launches a murder hunt, headed up by DCI Cassie Stuart and DS Sunny Khan.
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Episode 1 - Series 1, Episode 1The discovery of a skeleton in the cellar of a demolished building launches a murder hunt, headed up by DCI Cassie Stuart and DS Sunny Khan.
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Episode 1 - Series 1, Episode 1The discovery of a skeleton in the cellar of a demolished building launches a murder hunt, headed up by DCI Cassie Stuart and DS Sunny Khan.
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Episode 1 - Episode 1DCI Cassie Stuart and DS Sunny Khan investigate when a skeleton is found beneath a demolished house. The discovery of a car keys lead the pair on a trail to identify who the victim is, and they find a diary of a young man missing since 1976.
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Episode 2 - Series 1, Episode 2Having identified the body in the cellar, the detectives must work out how a government advisor, a priest, a bookkeeper and a housewife are related to the victim's death.
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Episode 2 - Series 1, Episode 2Having identified the body in the cellar, the detectives must work out how a government advisor, a priest, a bookkeeper and a housewife are related to the victim's death.
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Episode 2 - Series 1, Episode 2Having identified the body in the cellar, the detectives must work out how a government advisor, a priest, a bookkeeper and a housewife are related to the victim's death.
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Episode 2 - Episode 2After identifying the body in the cellar as Jimmy Sullivan, the hunt for his murderer begins. Cassie and Sunny begin the investigation by following up on the names written in Jimmy’s diary. In Liverpool, Cassie meets Jimmy’s mother, who is relieved at the prospect of finally finding out what happened to her son after he went missing. The name ‘Frankie C’ is identified as Sir Phillip Cross – a newly government-appointed entrepreneurial czar. However Sir Phillip denies that he ever met Jimmy. ‘Beth’ is revealed to be Lizzie Wilton, who lives in Croydon. She also denies knowing Jimmy but it is clear she was a very different woman in the 70s, before her current marriage.
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Episode 3 - Series 1, Episode 3Cassie and Sunny dig deeper into the lives of two of the people mentioned in the diary, beginning with Father Robert Greaves, who remembers Jimmy fondly.
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Episode 3 - Episode 3Cassie and Sunny visit a priest who remembers Jimmy fondly, but unfortunately Father Robert Greaves is unable to identify ‘Jo-Jo’, the mysterious person who gave Jimmy the diary. The investigation also leads to another person who remembers Jimmy well, Eric Slater, who used to be a bookkeeper at Arlingham house.
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Episode 3 - Series 1, Episode 3Cassie and Sunny dig deeper into the lives of two of the people mentioned in the diary, beginning with Father Robert Greaves, who remembers Jimmy fondly.
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Episode 3 - Series 1, Episode 3Cassie and Sunny dig deeper into the lives of two of the people mentioned in the diary, beginning with Father Robert Greaves, who remembers Jimmy fondly.
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Episode 4 - Episode 4The investigation into Jimmy’s death continues, with the discovery of marks on his body consistent with known gangland torture methods. Cassie and Sunny question Sir Phillip to find out exactly what his involvement was with a prominent East End crime family and Eric and Claire's anniversary party gets underway.
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Episode 4 - Series 1, Episode 4As the investigation into the cold-case murder continues, the forensic team discovers that the marks on the victim's body are consistent with known gangland torture methods.
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Episode 4 - Series 1, Episode 4As the investigation into the cold-case murder continues, the forensic team discovers that the marks on the victim's body are consistent with known gangland torture methods.
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Episode 4 - Series 1, Episode 4As the investigation into the cold-case murder continues, the forensic team discovers that the marks on the victim's body are consistent with known gangland torture methods.
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Episode 5 - Series 1, Episode 5As Cassie and Sunny continue their investigation into the cold-case murder, the net tightens around the people whose names were found in the victim's diary.
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Episode 5 - Series 1, Episode 5As Cassie and Sunny continue their investigation into the cold-case murder, the net tightens around the people whose names were found in the victim's diary.
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Episode 5 - Series 1, Episode 5As Cassie and Sunny continue their investigation into the cold-case murder, the net tightens around the people whose names were found in the victim's diary.
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Episode 5 - Episode 5Sir Phillip Cross makes a difficult decision in order to protect his family and salvage what is left of his reputation. Ray returns home to find Lizzie gone and a note that reads ‘I’m sorry’ and Father Robert comes clean to his family and the police.
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Episode 6 - Series 1, Episode 6Father Robert's revelations prove to have lasting repercussions, especially for Caroline when she goes into premature labour.
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Episode 6 - Episode 6Father Robert’s revelations have lasting repercussions. Things are especially difficult when Caroline goes into premature labor. Bella and Josh deliberate over how best to deal with their father and the search for Lizzie continues. Maureen is finally able to lay Jimmy to rest.
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Episode 6 - Series 1, Episode 6Father Robert's revelations prove to have lasting repercussions, especially for Caroline when she goes into premature labour.
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Episode 6 - Series 1, Episode 6Father Robert's revelations prove to have lasting repercussions, especially for Caroline when she goes into premature labour.
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Episode 7 - Series 2, Episode 1Detectives Cassie and Sunny, find themselves thrown into another historic murder case with the discovery of a body. This time it's the remains of a middle-aged man found in a suitcase.
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Episode 7 - Series 2, Episode 1Detectives Cassie and Sunny find themselves thrown into another historic murder case with the discovery of a body. This time it's the perfectly preserved remains of a middle-aged man found in a suitcase in the silt of a London river. As the detectives begin the complicated task of trying to identify the victim, four unconnected people go about their business - Brighton-based lawyer Colin Osborne, paediatric nurse Marion Kelsey, teacher Sara Mahmoud and respected police officer Tessa Nixon - unaware they are about to be dragged into the investigation.
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Episode 7 - Series 2, Episode 1Detectives Cassie and Sunny, who find themselves thrown into another historic murder case with the discovery of a body. This time it's the perfectly preserved remains of a middle-aged man found in a suitcase in the silt of a London river. As the detectives begin the complicated task of trying to identify the victim, four unconnected people go about their business - Brighton-based lawyer Colin Osborne, paediatric nurse Marion Kelsey, teacher Sara Mahmoud and respected police officer Tessa Nixon - unaware they are about to be dragged into the investigation.
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Episode 8 - Series 2, Episode 2With their victim identified, Cassie and Sunny begin to find out a bit more about David Walker by talking to his ex-wife, DI Tessa Nixon, who reveals he suffered from depression. A search through the original investigation files and some numbers from David's pager help build a picture of him - and also lead to a few potential suspects. However, his son Jason struggles to deal with the news that someone murdered his dad.
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Episode 8 - Series 2, Episode 2With their victim identified, Cassie and Sunny begin to gather more information about David Walker by talking to his ex-wife, DI Tessa Nixon, who reveals he suffered from depression.
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Episode 8 - Series 2, Episode 2With their victim identified, Cassie and Sunny begin to find out a bit more about David Walker by talking to his ex-wife, DI Tessa Nixon, who reveals he suffered from depression. A search through the original investigation files and some numbers from David's pager help build a picture of him - and also lead to a few potential suspects. However, his son Jason struggles to deal with the news that someone murdered his dad.
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Episode 9 - Series 2, Episode 3Sunny makes further investigations into David Walker's life that suggest he was a troubled man with a number of issues. Marion has a prickly chat with Cassie about her past and the inquiry reveals her close relationship with an IRA activist. As the police investigation encroaches on their life, Sara and Colin open up to their partners with secrets about their past.
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Episode 9 - Series 2, Episode 3Sunny makes further investigations into David Walker's life that suggest he was a troubled man with a number of issues. Marion has a prickly chat with Cassie about her past and the inquiry reveals her close relationship with an IRA activist. As the police investigation encroaches on their life, Sara and Colin open up to their partners with secrets about their past.
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Episode 9 - Series 2, Episode 3Sunny makes further investigations into David Walker's life that suggest he was a troubled man with a number of issues. Marion has a prickly chat with Cassie about her past.
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Episode 10 - Series 2, Episode 4Marion jeopardises her marriage by refusing to open up about the past to her husband, Colin is blackmailed even further and the secrets of Sara's past push her family to breaking point. A disturbing allegation about David opens up a second line of inquiry, and when Tessa is called in for questioning again it threatens to ruin her relationships with her husband and son.
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Episode 10 - Series 2, Episode 4Marion jeopardises her marriage by refusing to open up about the past to her husband, Colin is blackmailed even further and the secrets of Sara's past push her family to breaking point. A disturbing allegation about David opens up a second line of inquiry, and when Tessa is called in for questioning again it threatens to ruin her relationships with her husband and son.
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Episode 10 - Series 2, Episode 4Marion jeopardises her marriage by refusing to open up about the past to her husband, Colin is blackmailed even further and the secrets of Sara's past push her family to the limit.
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Episode 11 - Series 2, Episode 5Cassie turns her attention to Brentford house and the theory that one or more of the suspects may have been abused at the gatherings there. Marion is questioned again after Sinead's allegation that David could have been an IRA target. The detectives also look further into the accusations made against Colin while he was working in the city - but something does not quite seem to add up. Was his alleged victim telling the truth - and if not, why would she lie?
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Episode 11 - Series 2, Episode 5Cassie turns her attention to Brentford house and the theory that one or more of the suspects may have been abused at the gatherings there. Marion is questioned again after Sinead's allegation that David could have been an IRA target. The detectives also look further into the accusations made against Colin while he was working in the city - but something does not quite seem to add up. Was his alleged victim telling the truth - and if not, why would she lie?
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Episode 11 - Series 2, Episode 5Cassie focuses on Brentford house and the theory that some of the suspects may have been abused at the gatherings there. Marion is questioned again after Sinead's allegation.
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Episode 12 - Series 2, Episode 6With the suspects in the murder of David Walker all having either a motive, opportunity or connection to the victim, Cassie and Sunny are left with a massive puzzle to solve.
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Episode 12 - Series 2, Episode 6With the suspects in the murder of David Walker all having either a motive, opportunity or connection to the victim, Cassie and Sunny are left with a massive puzzle to solve. Cassie soon focuses in on Sara, whose alibi seems too perfect, as if it has been put together by an accomplice of the ex-prostitute - and the team is soon investigating the possibility of a wider revenge plan. Meanwhile, interviews with Colin and Marion's loved ones prove revealing.
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Episode 12 - Series 2, Episode 6With the suspects in the murder of David Walker all having either a motive, opportunity or connection to the victim, Cassie and Sunny are left with a massive puzzle to solve. Cassie soon focuses in on Sara, whose alibi seems too perfect, as if it has been put together by an accomplice of the ex-prostitute - and the team is soon investigating the possibility of a wider revenge plan. Meanwhile, interviews with Colin and Marion's loved ones prove revealing.
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Episode 13 - Series 3, Episode 1When human remains are found buried in the central reservation of the M1. Cassie and Sunny begin the task of identifying them.
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Episode 13 - Series 3, Episode 1When human remains are found buried in the central reservation of the M1. Cassie and Sunny begin the task of identifying them.
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Episode 14 - Series 3, Episode 2The search for what happened to Hayley begins as the team travel down to Middenham to meet her family.
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Episode 14 - Series 3, Episode 2The search for what happened to Hayley begins as the team travel down to Middenham to meet her family.
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Episode 15 - Series 3, Episode 3Cassie and Sunny begin interviewing the four male occupants of The Spinney over the millennium, who all have fairly consistent accounts of the time spent in Middenham. The rest of the Bishop Street Station team look at the timelines and leads from the original investigation.
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Episode 15 - Series 3, Episode 3Cassie and Sunny begin interviewing the four male occupants of The Spinney over the millennium, who all have fairly consistent accounts of the time spent in Middenham. The rest of the Bishop Street Station team look at the timelines and leads from the original investigation.
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Episode 16 - Series 3, Episode 4Cassie and Sunny suspect that the men all colluded in lying about their version of events for that evening, but why? The press begin to circle as they find out that James has been questioned in connection to the Hayley Reid case.
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Episode 16 - Series 3, Episode 4Cassie and Sunny suspect that the men all colluded in lying about their version of events for that evening, but why? The press begin to circle as they find out that James has been questioned in connection to the Hayley Reid case.
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Episode 17 - Series 3, Episode 5Cassie and Sunny finally get closer to some truth about the night Hayley disappeared and the case takes a devastating turn for Cassie.
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Episode 17 - Series 3, Episode 5Cassie and Sunny finally get closer to some truth about the night Hayley disappeared and the case takes a devastating turn for Cassie.
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Episode 18 - Series 3, Episode 6Under the glare of media spotlights, the team race to find the evidence to prove the identity of Hayley's killer.
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Episode 18 - Series 3, Episode 6Under the glare of media spotlights, the team race to find the evidence to prove the identity of Hayley's killer.
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Episode 19 - Series 4, Episode 1Sunny is called to a dump sight in Haringey, where a headless body has been found amongst the freezers. Meanwhile, Cassie has been on medical leave and doesn't want to go back to do her final three months.
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Episode 20 - Series 4, Episode 2As Sunny and Cassie investigate they find that a graduating class of police officers could all be connecting to the case- some are still serving in the force.
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Episode 21 - Series 4, Episode 3Cassie and Sunny interview the four suspects, who all deny knowing the victim. Boulting discovers Walsh was cautioned three weeks before his death and believes it was with Ram, while Collier manages to locate the rest of Walsh's body.
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Episode 22 - Series 4, Episode 4Cassie 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.
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Episode 23 - Series 4, Episode 5Cassie 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.
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Episode 24 - Series 4, Episode 6Despite a tragic turn of events, Sunny and the team narrow down the suspects. Will they find conclusive proof of who the murder weapon belonged and succeed in bringing Walsh's killer to justice?
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