The worst episodes of Unforgotten
Ranked by viewer rating, lows first. Lit marks on the season rail place this list across the run. Vote on a placement to back it or contest it.
- 01
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.
- 02
The new series starts with the discovery of body found in a sealed suitcase in the silt of the River Lea. With the body preserved but clearly having been there a number of years, DCI Cassie Stuart and DI Sunny Khan begin the complicated task of identifying the victim and investigating his murder.With an expensive watch found on the body the only evidence to go on, the item is sent to forensics who suggest approaching a watchmaker who may have repaired it to find out more about its owner.Meanwhile, we meet four seemingly un-connected suspects who may have a link to the victim – DI Tessa Nixon who is struggling with her loner son, nurse Marion Kelsey who works with chronically ill children, Brighton-based barrister Colin Osborne who is in the process of adopting a little girl with his husband, and teacher Sara Mahmoud who is interviewing for a new position in a school that needs turning around. How do any of them link to the victim, though, and why would one of them kill him?
- 03
Detectives Cassie and Sunny begin to find out a bit more about who David Walker was through speaking to his ex-wife Tessa.
- 04
In the penultimate episode of the series, Cassie turns her attention to investigating the goings-on at the Brentford house and the theory that one or more of the suspects may have been abused at the gatherings that took place there.
- 05
Under the glare of media spotlights, the team race to find the evidence to prove the identity of Hayley's killer.
- 06
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.
- 07
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.
- 08
When human remains are found buried in the central reservation of the M1, Cassie and Sunny begin the task of identifying them.
- 09
Cassie, Sunny and the team travel to Middenham to meet Hayley's parents and twin sister, Jessica. The press are already circling in the area and it's clear that unearthing Hayley's body will bring the whole investigation back into the media spotlight.
- 10
Peter, Chris, James and Tim are all interviewed by Cassie and Sunny about the time they spent renting a holiday cottage near where Hayley disappeared over the turn of the millennium. James is the first to be called in, and reveals that Tim and Chris both had their families with them at the time. He recalls seeing press coverage of Hayley's disappearance, but never having seen her in person. Meanwhile, Chris is looking at flats with Jamila, who resolves that she needs to know everything about his past before she will take their relationship further.
- 11
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.
- 12
It becomes clear that the four male suspects have colluded in lying about their version of events on the night Hayley went missing. Jake speaks to Tim Finch's ex-wife to hear her version of events and the team uncover some disturbing information about Chris Lowe's past. Meanwhile, Sunny's ex-wife makes advances towards him and Cassie is becoming increasingly worried about her dad's memory loss.
- 13
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.
- 14
The team discover Asif, Mel, and Marty's connections to the deceased, and bring Marty in. Secrets from the deceased's past come to light, and Jess reaches out to her sister.
- 15
With the details of the deceased's life becoming clearer and one suspect already being questioned, the Bishop Street team find suspects further afield.
- 16
With each of the suspects having a motive, opportunity or connection to victim, David Walker, Cassie and Sunny try to join the dots to discover who actually killed him 25 years earlier.
- 17
Lies are uncovered, and suspects are taken into custody, but who's protecting who? Meanwhile, Jess plans a conversation with Steve.
- 18
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?
- 19
Cassie and Sunny identify four suspects who trained as police probationers together; two of them are still serving police officers.
- 20
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.
- 21
Despite the trouble in their personal lives, Sunny and Jess attempt a reset as they follow the clues in the case.
- 22
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.
- 23
Andrews is still unconvinced that there is enough evidence to tie four police officers to the Walsh murder. But with Fogerty dead, Cassie believes the only way to determine the truth is to interview the passengers of his car on the night in question.
- 24
When a severed leg is discovered inside a chimney the team get to work identifying the victim. Cassie's replacement has a rocky start as she clashes with a grieving Sunny.
- 25
The team work to identify the body found in the chimney flue as forensics reveal the cause of death. Jess and Sunny visit the victim's mother to break the devastating news. They find the pair had a tumultuous relationship.
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