413 votes


ITV 2015

London police detectives Cassie Stuart and Sunny Khan investigate historic cold cases involving missing persons, murder and long-hidden secrets.

British Crime & Drama New Shows Great TV Shows and Miniseries UK British Shows ITV British shows All Currently Running Shows 4 RM-Mystery, crime, suspense Mystery & Crime

The 10 Best Episodes of Unforgotten

Unforgotten - S4E4

#1 - Episode 4


Season 4 - Episode 4

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 episode was rated #1 Best episode of Unforgotten from 16 votes.

Unforgotten - S2E6

#2 - Episode 6


Season 2 - Episode 6

As each of the suspects have either a motive or a connection to David Walker, Cassie and Sunny work on trying to prove a more far-fetched theory that involves travelling across the country and delving further into the past of the suspects.

The episode was rated #2 Best episode of Unforgotten from 628 votes.

Unforgotten - S3E6

#3 - Episode 6


Season 3 - Episode 6

Following the discovery of seemingly incriminating items found at his house, Tim insists he bought them for his girls at a fete in Middenham. However, the team are not buying Tim's story. A new discovery leaves the team shocked and devastated, hitting Cassie particularly hard.

The episode was rated #3 Best episode of Unforgotten from 384 votes.

Unforgotten - S4E3

#4 - Episode 3


Season 4 - Episode 3

Cassie and Sunny interview each of the four suspects, who all deny knowing the victim. Bouting discovers Walsh was cautioned three weeks before his death.

The episode was rated #4 Best episode of Unforgotten from 78 votes.

Unforgotten - S4E2

#5 - Episode 2


Season 4 - Episode 2

Cassie and Sunny identify four potential suspects who trained as police probationers together, and two of them are still serving officers. They have no luck finding the rest of the body and decide to go public about the discovery of Walsh's remains.

The episode was rated #5 Best episode of Unforgotten from 89 votes.

Unforgotten - S3E5

#6 - Episode 5


Season 3 - Episode 5

James, Tim and Chris are exposed as having lied about their whereabouts on the night Hayley died. Pete reveals that he saw Eliot climbing into the holiday home through a window on New Year's Day, while leaves James struggling with the possibility that his son may have killed Hayley. Fran cracks a code in the dead girl's diary, suggesting that she met a local drug dealer on the night she disappeared.

The episode was rated #6 Best episode of Unforgotten from 392 votes.

Unforgotten - S4E1

#7 - Episode 1


Season 4 - Episode 1

A dismembered body is found in a scrapyard and the team believes the remains had 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.

The episode was rated #7 Best episode of Unforgotten from 102 votes.

Unforgotten - S3E4

#8 - Episode 4


Season 3 - Episode 4

It becomes clear to the detectives that the four men have conspired to come up with a false account of what took place the night Hayley disappeared. Jake is assigned to track down Tim Finch's ex-wife to hear her version of events - and uncovers disturbing information about Chris Lowe's past. On a personal front, Sunny is offered the opportunity to rekindle his past marriage, and Cassie worries about her father's failing memory.

The episode was rated #8 Best episode of Unforgotten from 403 votes.

Unforgotten - S2E3

#9 - Episode 3


Season 2 - Episode 3

Further examination of David Walker's history suggests that he was a troubled man with a number of issues. Marion has a prickly chat with Cassie about her past and the investigation reveals her close relationship with an IRA activist. As the police enquiries encroach on their lives, Sara and Colin open up to their partners.

The episode was rated #9 Best episode of Unforgotten from 642 votes.

Unforgotten - S2E5

#10 - Episode 5


Season 2 - Episode 5

Cassie begins to investigate the Brentford house and the theory that one or more of the suspects may have been abused at the gatherings that took place there. The enquiry reveals some information that allows Colin to come to terms with a shame that he has lived with for over 25 years. Sara is forced to confront her past in order to prove her innocence. Marion pushes her family even further away.

The episode was rated #10 Best episode of Unforgotten from 623 votes.

Unforgotten - S1E6
#11 - Episode 6
Season 1 - Episode 6

Father Robert's revelations prove to have lasting repercussions, especially for Caroline when she goes into premature labour. Bella and Josh deliberate over the best way to deal with their father, the search for Lizzie continues and Maureen is finally able to lay Jimmy to rest.

The episode was rated #1 Best episode of Unforgotten from 626 votes.

Unforgotten - S3E3
#12 - Episode 3
Season 3 - Episode 3

Cassie and Sunny begin their interviews...

The episode was rated #2 Best episode of Unforgotten from 402 votes.

Unforgotten - S1E5
#13 - Episode 5
Season 1 - Episode 5

As 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. Sir Phillip Cross makes a difficult decision to salvage what is left of his reputation while at the same time protecting his family, Father Robert comes clean to the police and Ray returns home to find Lizzie gone.

The episode was rated #3 Best episode of Unforgotten from 598 votes.

Unforgotten - S3E2
#14 - Episode 2
Season 3 - Episode 2

Cassie and Sunny go in search of Hayley's family as the press begin to take an interest in the story. A detective who was involved in the original investigation offers his thoughts on why her disappearance remained unsolved, pointing out that Hayley's boyfriend was suspected of the crime but was never charged. The distance between where Hayley was last seen and where her body was found leads Cassie to form a new theory - that the killer may have travelled up from London, then returned before they could be questioned

The episode was rated #4 Best episode of Unforgotten from 401 votes.

Unforgotten - S1E4
#15 - Episode 4
Season 1 - Episode 4

As 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. With this in mind, Cassie and Sunny question Sir Phillip about his involvement with a prominent East End crime family 40 years ago. Did the businessman or any of the shady associates of his youth have anything to do with Jimmy's disappearance or murder? Meanwhile, Eric and Claire's anniversary gets under way.

The episode was rated #5 Best episode of Unforgotten from 625 votes.

Unforgotten - S2E4
#16 - Episode 4
Season 2 - Episode 4

A disturbing allegation about David opens up a second line of enquiry for the team. How much Tessa actually knew about David's life threatens to ruin her relationship with her husband and son. Marion gets into trouble at work and jeopardises her marriage by refusing to open up about her past. After having his phone stolen and information exposed, Colin is blackmailed again - and Sarah's secrets push her family to breaking point.

The episode was rated #6 Best episode of Unforgotten from 606 votes.

Unforgotten - S2E2
#17 - Episode 2
Season 2 - Episode 2

Detectives Cassie and Sunny begin to find out a bit more about who David Walker was through speaking to his ex-wife Tessa. A search through the original investigation files and numbers traced from his pager help them build a picture of David, and lead them towards potential suspects. A conversation with David's old school friend leads Cassie and Sunny to believe that they may have found a motive.

The episode was rated #7 Best episode of Unforgotten from 661 votes.

Unforgotten - S3E1
#18 - Episode 1
Season 3 - Episode 1

When the body of a teenage girl who went missing at the turn of the millennium is found at a building site off the M1 motorway, four men are placed under the spotlight and their relationships are tested to the limit.

The episode was rated #8 Best episode of Unforgotten from 405 votes.

Unforgotten - S1E3
#19 - Episode 3
Season 1 - Episode 3

Cassie and Sunny dig deeper into the lives of two of the people mentioned in the diary. They begin with Father Robert Greaves, who remembers Jimmy fondly, but is unable to help identify the mysterious 'Jo-Jo', the person who it appears gave Jimmy the journal. The detectives also meet Eric Slater, the former bookkeeper to Arlingham House. He also remembers the victim well - but can he provide any clues to his disappearance?

The episode was rated #9 Best episode of Unforgotten from 647 votes.

Unforgotten - S1E2
#20 - Episode 2
Season 1 - Episode 2

Having identified the body in the cellar as Jimmy Sullivan, Cassie visits the victim's mother, who is relieved that she might finally find out what happened to her son 39 years after he went missing. The detectives focus their investigation on the names in Jimmy's diary, who are revealed to be a government advisor, a priest, a retired bookkeeper and a housewife with a secret past. What part, if any, could these four wildly different people have played in Jimmy's disappearance and demise?

The episode was rated #10 Best episode of Unforgotten from 686 votes.

Last updated: apr 17, 2021



Nicola Walker is a brillant actor! So it is not surprising that this is an exceptional series. Don't expect a fast paced, shoot 'em up, action car chase police drama. If that is your favourite fare, you probably won't like this drama. But if you like a well crafted story that reels you in until you are sitting at the edge of your seat, with multi-faceted performances from an excellent cast, portraying believable characters living out the consequences of their own choices, you will love this series. At the end of Series 3, I've elevated my rating from a 9 (superb) to a 10 (brilliant) out of 10 and it now is on my Top 40 TV Series list. The finale of this past season felt like a series finale, but the writer (Creator/Executive Producer - Chris Lang) of the show has since teased out that, should the audience wish, there may be a 4th. Already garnering critical success and BAFTA attention, I think the audience is not ready for DCI Cassie Stuart/Nicola Walker or DS Sunil' Khan/Sanjeev Bhaskar to retire. [Police Procedural]


The bad thing about this show is that we only get to see it once a year and only 6 episodes :(


I liked the teamwork angle of the investigative group, not all of them being caucasians or 20-somethings. Nicola Walker is a longtime favorite, but this wasn't the best series she's been a part of. The story was OK, though it lacks urgency. Very conversational, lots and lots of case chit-chat while driving... talking while walking to or from a car... or phone calls in a car -- I saw more of the inside of a car than I would have liked. One of those whodunnits where they suggest various plausible scenarios throughout, pick a perpetrator at the end -- could easily be anyone, produce the final explanatory backstory, and roll the credits -- not my favorite crime drama formula. Not terrible, but season 1 hasn't motivated me to sit through season 2.


One of the best tv shows ever , I just wish it was on more frequently.


Great show! Really good stories and acting.


Great cop show.. love how it's not just the person who commits the crime and how their life unravels, but we also see family members and other people connected directly and indirectly from the crime and how the fall-out effects them also. It's never obvious WHO actually did the crime until later in the sheason, so you're always intrigued as to who the criminal actually is - sometimes right up till the last episode. 9/10


Nicola Walker is a brilliant actor, I watch everything she does. This crime drama shows her as a cop. She plays the role with the mixed emotion needed in this part and it awesome. One of her best roles.

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