8.1/10776 votes#1 - 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. 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.
Director: Andy Wilson
Writer: Chris Lang
8.1/10639 votes#2 - 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.
Director: Andy Wilson
Writer: Chris Lang
8.2/10612 votes#3 - 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. Bouting discovers Walsh was cautioned three weeks before his death.
Director: Andy Wilson
Writer: Chris Lang
8.1/10609 votes#4 - Episode 4
Season 4 Episode 4 - Aired 3/15/2021
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.
Director: Andy Wilson
Writer: Chris Lang
8.3/10631 votes#5 - Episode 5
Season 4 Episode 5 - Aired 3/22/2021
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.
Director: Andy Wilson
Writer: Chris Lang
8.7/101,001 votes#6 - Episode 6
Season 4 Episode 6 - Aired 3/29/2021
Despite a tragic turn of events, Sunny and the team narrow down the suspects.
Director: Andy Wilson
Writer: Chris Lang
The Best Episodes of Unforgotten Season 4
Every episode of Unforgotten Season 4 ranked from best to worst. Discover the Best Episodes of Unforgotten Season 4!
London police detectives Cassie Stuart and Sunny Khan investigate historic cold cases involving missing persons, murder and long-hidden secrets.
Genres:DramaCrimeMystery
Network:ITV1
Season 4 Ratings Summary
"Episode 1" is the best rated episode of "Unforgotten" season 4. It scored 8.1/10 based on 776 votes. Directed by Andy Wilson and written by Chris Lang, it aired on 2/22/2021. This episode is rated 0.0 points higher than the second-best, "Episode 2".