131 user 8 critic


0:31 | Trailer
London detectives investigate crimes from the past, unravelling secrets left buried for years.


Chris Lang
606 ( 74)




4   3   2   1  
2020   2019   2018  
2 wins & 1 nomination. See more awards »





Series cast summary:
Nicola Walker ...  DCI Cassie Stuart 24 episodes, 2015-2020
Sanjeev Bhaskar ...  DS Sunil 'Sunny' Khan / ... 24 episodes, 2015-2020
Lewis Reeves ...  DC Jake Collier 24 episodes, 2015-2020
Jordan Long ...  DS Murray Boulting 24 episodes, 2015-2020
Peter Egan ...  Martin Hughes 24 episodes, 2015-2020
Carolina Main ...  DC Fran Lingley 18 episodes, 2017-2020
Hiten Patel ...  DC Patel 18 episodes, 2017-2020


When the body of a young man is discovered in a derelict building, Detective Chief Inspector (DCI) Cassie Stuart is called in to investigate with her partner, Detective Sergeant (DS) Sunil "Sunny" Khan (Sanjeev Bhaskar). Jimmy Sullivan was a homeless boy, murdered in 1976 when the building was a hostel. His diary implicates four suspects; a clergyman, an eminent entrepreneur, a community worker, and a wheelchair-bound husband caring for his wife. Each has a secret to hide. As their lies unravel, the people they love most begin to wonder what else they might be capable of. Nothing in this case is black and white. Can you ever really know the people closest to you? What secrets have they buried?

Plot Summary | Add Synopsis


Crime | Drama | Mystery


TV-MA | See all certifications »

Did You Know?


Trevor Eve and Cherie Lunghi appeared on Waking the Dead (2000). See more »


Since the car was stolen, the car key, which was original, should still have been in the possession of the first owner. It couldn't have been found underneath the body. Except if the key was stolen first, or the key was left in the car, either in the ignition or above the windshield shade, under the mat, etc., and since that was never established, not a plot hole. See more »


Featured in BAFTA Televsion Awards 2016 (2016) See more »


All We Do
Written by Ant West and Josephine Vander Gucht
Performed by Ant West and Josephine Vander Gucht (as Oh Wonder)
See more »

User Reviews

Touching and honest
30 October 2015 | by gmorgan51-158-682165See all my reviews

I am really blown away by this series. The writing is excellent, and, as a lover of mysteries, the plot is riveting. Each episode builds on the previous episode. The chronology of events and the characters make sense. Notwithstanding dramatic license, the people seem real, with strengths and weaknesses we can all recognize and relate to. The acting is phenomenal.

Also, I was not aware that issues of race were as prevalent in England as I have recently learned. As an African-American, I always considered Europe to be, historically, much more tolerant of racial differences than in the US. Apparently, that was, and is, not the case.

Finally, I can appreciate the sensitivity and thoroughness with which the police, led by the character played by Nicola Walker, are conducting the investigation into Jimmy's death. The scenes and dialogs with his mother are not only touching, but ring so true of how a parent who has lost a child would feel and react and live. I have first-hand experience of that unspeakable state. Thank you, Chis Lang.

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English | Spanish | Arabic

Release Date:

8 April 2018 (USA) See more »

Also Known As:

Unforgotten See more »

Filming Locations:

England, UK

Company Credits

Show more on IMDbPro »

Technical Specs


(18 episodes)

Sound Mix:




Aspect Ratio:

16:9 HD
See full technical specs »

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