London police detectives Cassie Stuart and Sunny Khan investigate historic cold cases involving missing persons, murder and long-hidden secrets.
Where to watch
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Amazon Prime Video
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PBS
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PBS Masterpiece
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Thirteen
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WETA+
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KQED
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Amazon Video
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Apple TV Store
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Google Play Movies
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Fandango At Home
see all options Availability data: JustWatch
- Seasons
- 6
- Episodes aired
- 36
- Latest aired
- S06E06
- Total runtime
- 1d 3h
Timeline when each season aired
- Season 1 October 2015 – November 2015 6 episodes
- Season 2 January 2017 – February 2017 6 episodes
- Season 3 July 2018 – August 2018 6 episodes
- the show was away for 2 years and 6 months
- Season 4 February 2021 – March 2021 6 episodes
- the show was away for 1 year and 11 months
- Season 5 February 2023 – April 2023 6 episodes
- the show was away for 1 year and 10 months
- Season 6 February 2025 6 episodes
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S02E01 Episode 1
January 5 · 46min find the promo
Show synopsis
Detectives Cassie and Sunny reunite as they take on a case concerning the remains of a body found locked in a suitcase in the River Lea. As the pair begin the complicated task of trying to identify the body, the stories of four people with apparent links to the victim begin to unfold. Old wounds are reopened when the detectives track down the victim's wife and son, who have been in the dark about his disappearance for 26 years. Who wanted the man dead and why?
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S02E02 Episode 2
January 12 · 46min find the promo
Show synopsis
Crime drama series. Detectives Cassie and Sunny begin to find out a bit more about who David Walker was through speaking to his ex-wife Tessa.
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S02E03 Episode 3
January 19 · 46min find the promo
Show synopsis
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.
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S02E04 Episode 4
January 26 · 46min find the promo
Show synopsis
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.
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S02E05 Episode 5
February 2 · 46min find the promo
Show synopsis
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.
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S02E06 Episode 6
February 9 · 46min find the promo
Show synopsis
Having come to another dead end, Cassie and Sunny work on trying to prove a final theory into David Walker's death and catch the culprit.