DCI Cassie Stuart is a fictional character portrayed by Nicola Walker in the TV series Unforgotten.
In the first episode they appeared in, titled Episode #1.1 (season 1), they were 47 years old.
They appear in 24 episodes out of a total of 30 aired so far and have accumulated 8333 positive votes.
The character of DCI Cassie Stuart is mainly associated with DI Sunil 'Sunny' Khan, Martin Hughes and Sir Phillip Cross.
Episodes24
Episode #1.1
episode S1.E1 april 2018A skeleton found in the cellar of a building prompts investigation from DCI Stuart and her colleague into the murder of a young man that could potentially span back thousands of years.
Episode #1.2
episode S1.E2 april 2018Having identified the body in the cellar as Jimmy Sullivan the search for his murderer begins, Cassie and Sunny investigate, starting with identifying the names featured in Jimmy's diary.
Episode #1.3
episode S1.E3 april 2018Cassie and Sunny pay a visit to 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 diary.
Episode #1.4
episode S1.E4 april 2018The investigation into Jimmy's death continues with the discovery of marks on his body consistent with known gangland torture methods.
Episode #1.5
episode S1.E5 april 2018Sir Phillip makes a difficult decision in order to protect his family and salvage what is left of his reputation. Father Robert comes clean to his family and the police.
Episode #1.6
episode S1.E6 april 2018Father Robert's revelations have lasting repercussions. 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.
Episode #2.1
episode S2.E1 april 2018Cassie and Sunny join together to investigate when a body is found in a suitcase when the river Lea gets dredged.
Episode #2.2
episode S2.E2 april 2018With their victim now identified, Cassie and Sunny's search for David Walker's killer is underway.
Episode #2.3
episode S2.E3 may 2018Jason finds it difficult to process his father's death and asks Cassie to see his dad's body following his outburst at stepsister Becca.
Episode #2.4
episode S2.E4 may 2018With Sara's revelation about her past to her husband sending shock waves through their domestic bliss, she fights to make him understand.
Episode #2.5
episode S2.E5 may 2018Cassie 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.
Episode #2.6
episode S2.E6 may 2018With each of the suspects having a motive, opportunity or connection to David Walker, Cassie and Sunny try to join the dots to discover who actually killed him 25 years earlier.
Episode #3.1
episode S3.E1 april 2019When the body of a teenage girl who went missing at the turn of the millennium is found under the central reservation of the M1 motorway, four men are placed under the spotlight and their relationships are tested to the limit.
Episode #3.2
episode S3.E2 april 2019Cassie and Sunny learn that Hayley, who was strangled, was a twin with sister Jessica, before they are given a lead linking her to a holiday let where she worked. Having been cleared of malpractice, Tim helps his old school-friend, the fragile Chris, when he is burgled, though there is good news for Chris from girlfriend Jamila. Pete has no such luck, as his fraud is discovered whilst James tries to understand why his son Elliot wants a sex change operation. Then one of them receives a visit from the police.
Episode #3.3
episode S3.E3 april 2019Cassie and Sunny begin interviewing the four male occupants of The Spinney whilst the rest of the team look at the time-lines and leads from the original investigation.
Episode #3.4
episode S3.E4 april 2019Mel Hollis's account convinces Cassie that all four men were lying, particularly Pete, whose criminal past makes him the prime suspect and ends his marriage. However Tim's first wife Derran - who stayed at the cottage let with him - paints a less than flattering picture of him whilst Chris's estranged daughter Maya also reveals her father's dark secret. Cassie loses the file on Pete as he prepares to leave the country, having passed on a message about Elliot but Sandra Rayworth's toxic web-site marks him out as a victim.
Episode #3.5
episode S3.E5 may 2019Following the murderous attack on Pete, Sandra Rayworth is charged with incitement. Cassie finds evidence to incriminate Elliot, though only fifteen at the time of Hayley's death, but James quizzes him and brings him to the police, who dismiss him from their enquiries. Chris makes a startling confession whilst Tim's daughter Emma learns the truth about her father's violence from Derran just before an arrest is made for Hayley's murder.
Episode #3.6
episode S3.E6 may 2019One suspect is now dead and another in custody but evidence found at his flat is dismissed by Mrs Reid as not belonging to Hayley. However it does connect to another unsolved murder and a shocking admission follows, finally closing the case. Meanwhile the remaining two men find positive support through two women in their lives, ending their torment.
Episode #4.1
episode S4.E1 february 2021When a headless and hand-less body is found in a North London scrapyard, the team led by Sunny are called to investigate.
Episode #4.2
episode S4.E2 march 2021Cassie and Sunny continue to investigate Fogerty's driving offence.
Episode #4.3
episode S4.E3 march 2021Cassie and Sunny interview each of the four suspects, who deny knowing the victim. Boulting discovers Walsh was cautioned three weeks before his death, while Collier locates the rest of Walsh's body.
Episode #4.4
episode S4.E4 march 2021Cassie 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 Walsh was murdered.
Episode #4.5
episode S4.E5 march 2021Cassie 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.
Episode #4.6
episode S4.E6 march 2021Despite a shocking event, the Bishop Street team start to piece together which of the four was responsible for the murder of Matthew Walsh but it is pathologist Leanne Balcombe who provides the crucial piece of evidence.
- Episode #1.1
- Episode #1.2
- Episode #1.3
- Episode #1.4
- Episode #1.5
- Episode #1.6
- Episode #2.1
- Episode #2.2
- Episode #2.3
- Episode #2.4
- Episode #2.5
- Episode #2.6
- Episode #3.1
- Episode #3.2
- Episode #3.3
- Episode #3.4
- Episode #3.5
- Episode #3.6
- Episode #4.1
- Episode #4.2
- Episode #4.3
- Episode #4.4
- Episode #4.5
- Episode #4.6
Best moments10
- 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.
- A skeleton found in the cellar of a building prompts investigation from DCI Stuart and her colleague into the murder of a young man that could potentially span back thousands of years.
- Cassie and Sunny learn that Hayley, who was strangled, was a twin with sister Jessica, before they are given a lead linking her to a holiday let where she worked. Having been cleared of malpractice, Tim helps his old school-friend, the fragile Chris, when he is burgled, though there is good news for Chris from girlfriend Jamila. Pete has no such luck, as his fraud is discovered whilst James tries to understand why his son Elliot wants a sex change operation. Then one of them receives a visit from the police.
- Having identified the body in the cellar as Jimmy Sullivan the search for his murderer begins, Cassie and Sunny investigate, starting with identifying the names featured in Jimmy's diary.
- Cassie and Sunny continue to investigate Fogerty's driving offence.
- One suspect is now dead and another in custody but evidence found at his flat is dismissed by Mrs Reid as not belonging to Hayley. However it does connect to another unsolved murder and a shocking admission follows, finally closing the case. Meanwhile the remaining two men find positive support through two women in their lives, ending their torment.
- When the body of a teenage girl who went missing at the turn of the millennium is found under the central reservation of the M1 motorway, four men are placed under the spotlight and their relationships are tested to the limit.
- 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 pathologist identifies Walsh was murdered.
- Mel Hollis's account convinces Cassie that all four men were lying, particularly Pete, whose criminal past makes him the prime suspect and ends his marriage. However Tim's first wife Derran - who stayed at the cottage let with him - paints a less than flattering picture of him whilst Chris's estranged daughter Maya also reveals her father's dark secret. Cassie loses the file on Pete as he prepares to leave the country, having passed on a message about Elliot but Sandra Rayworth's toxic web-site marks him out as a victim.
- Cassie and Sunny pay a visit to 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 diary.
- Episode #4.5
- Episode #1.1
- Episode #3.2
- Episode #1.2
- Episode #4.2
- Episode #3.6
- Episode #3.1
- Episode #4.4
- Episode #3.4
- Episode #1.3