The BEST episodes of Unforgotten
Every episode of Unforgotten ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Unforgotten!
Dedicated detectives work tirelessly to unravel long-held secrets.

#1 - Episode 6
Season 2 - Episode 6 - Aired 2/9/2017
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.

#2 - Episode 6
Season 3 - Episode 6 - Aired 8/19/2018
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.

#3 - Episode 6
Season 1 - Episode 6 - Aired 11/12/2015
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.


#5 - Episode 5
Season 1 - Episode 5 - Aired 11/5/2015
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.

#6 - Episode 4
Season 1 - Episode 4 - Aired 10/29/2015
The investigation into Jimmy's death continues as Cassie and Sunny question Sir Phillip Cross.

#7 - Episode 5
Season 2 - Episode 5 - Aired 2/2/2017
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.

#8 - Episode 3
Season 2 - Episode 3 - Aired 1/19/2017
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.

#9 - Episode 3
Season 4 - Episode 3 - Aired 3/9/2021
Cassie and Sunny interview each of 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.
Watch Now:AmazonApple TV
#10 - Episode 3
Season 3 - Episode 3 - Aired 7/29/2018
Cassie and Sunny begin their interviews...

#11 - Episode 3
Season 1 - Episode 3 - Aired 10/22/2015
As the investigation into Jimmy's death continues, Cassie and Sunny visit Father Robert Greaves in a bid to identify the mysterious Jo-Jo.


#13 - Episode 4
Season 2 - Episode 4 - Aired 1/26/2017
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.

#15 - Episode 2
Season 2 - Episode 2 - Aired 1/12/2017
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.

#16 - Episode 2
Season 4 - Episode 2 - Aired 3/1/2021
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.
Watch Now:Amazon
#17 - Episode 1
Season 2 - Episode 1 - Aired 1/5/2017
A waterlogged suitcase holds the remains of David Walker, 25 years after he disappeared. Walker’s wife, Tessa, turns out to be a police officer. Cassie and Sunny interview two other suspects, Sara and Colin.

#18 - Episode 2
Season 1 - Episode 2 - Aired 10/15/2015
DCI Cassie Stuart begins to identify the people mentioned in the diary of Jimmy Sullivan.

#19 - Episode 1
Season 5 - Episode 1 - Aired 2/27/2023
When a severed leg is discovered in a bricked-up chimney flue the team get to work identifying the victim and cause of death. Cassie’s replacement on the force, DCI Jess James, has a rocky start as she clashes with a grieving Sunny.

#20 - Episode 1
Season 4 - Episode 1 - Aired 2/22/2021
A dismembered body is found in a scrapyard and the team believes the remains had been stored in a domestic freezer for 30 years. 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.
Watch Now:Amazon
#21 - Episode 2
Season 5 - Episode 2 - Aired 3/6/2023
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.

#22 - Episode 1
Season 1 - Episode 1 - Aired 10/8/2015
When a skeleton is unearthed, a car key found near the body is the only clue to the identity of the victim.


#25 - Episode 5
Season 6 - Episode 5 - Aired 2/23/2025
Lies are uncovered, and suspects are taken into custody, but who's protecting who? Meanwhile, Jess plans a conversation with Steve.

