Unforgotten (2015)
A gripping British crime drama that resurfaces decades-old secrets, one cold case at a time.
Unforgotten - Series Information
- Original Title: Unforgotten
- First Air Year: 2015
- Last Air Year: 2025
- Created by: Chris Lang
- Type: TV Series
- Genres: Drama, Crime, Mystery
- Content Rating (US): TV-MA
- Episode Runtime: Average runtime per episode: 46 minutes
- Number of Seasons: 6
- Number of Episodes: 36
- Status: Returning Series
- Original Language: English
- Spoken Languages: English
- First Air Date: October 8, 2015 (United States - TV-MA), October 8, 2015 (Canada - 14+), October 8, 2015 (United Kingdom - 15), October 8, 2015 (Germany - 18), October 8, 2015 (France - 18), October 8, 2015 (Australia - M), October 8, 2015 (Brazil - 16), October 8, 2015 (South Korea - 15)
- Networks: ITV1
- Alternative Titles: 언포거튼 (KR), Nedgrave hemmeligheter (NO), Unforgotten on Masterpiece (US), The Forgotten (UK), Unforgotten le passé déterré (FR)
- Production Companies: Mainstreet Pictures
- Production Countries: United Kingdom
Unforgotten - Plot
London police detectives Cassie Stuart and Sunny Khan investigate historic cold cases involving missing persons, murder and long-hidden secrets.
Unforgotten - Trailer
Watch the official trailer and see the cold case drama unfold:
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Unforgotten - Cast & Crew
Creator(s)
- Chris Lang
Main Cast
- Sanjeev Bhaskar
- Carolina Main
- Jordan Long
- Nicola Walker
- Lewis Reeves
- Peter Egan
- Sinéad Keenan
- Pippa Nixon
- Alastair Mackenzie
- Georgia Mackenzie
Writers
- Chris Lang
Executive Producers
- Chris Lang
- Laura Mackie
- Sally Haynes
- Guy de Glanville
Unforgotten - FAQs
Where can you watch Unforgotten in the US?
Unforgotten is available to stream in the United States on Amazon Prime Video, PBS, and PBS Masterpiece via Amazon Channel. It can also be rented or purchased through Amazon Video, Apple TV Store, Google Play Movies, and Fandango At Home. WETA+ also offers the series as part of its subscription.
Why did Nicola Walker leave Unforgotten?
Nicola Walker's character, DCI Cassie Stuart, died at the end of Season 4 following a road traffic collision. Creator Chris Lang confirmed this was a planned creative decision to evolve the show. Sinéad Keenan subsequently joined as new lead DCI Jessica 'Jessie' James from Season 5 onward.
Is Unforgotten based on real cold cases?
Unforgotten is not based on specific real cold cases. Creator Chris Lang invented each season's central mystery, though the series draws on realistic investigative procedures used by actual UK police. The show's portrayal of cold case forensics and witness interviews is grounded in authentic detective methodology.
How many seasons and episodes does Unforgotten have?
Unforgotten has six seasons, each consisting of six episodes, for a total of 36 episodes. The series premiered on ITV1 in October 2015 and is currently a returning series, with Season 6 being the most recent instalment as of 2025.
Who are the lead actors in Unforgotten?
The series stars Sanjeev Bhaskar as DS Sunil 'Sunny' Khan and Carolina Main as DC Fran Lingley. Nicola Walker played DCI Cassie Stuart in Seasons 1–4, while Sinéad Keenan took over as DCI Jessica 'Jessie' James from Season 5. The ensemble cast also includes Jordan Long, Lewis Reeves, and Pippa Nixon.
What is Unforgotten about?
Unforgotten follows London Metropolitan Police detectives as they reopen decades-old cold cases triggered by newly discovered human remains or evidence. Each season presents a self-contained mystery, unravelling the hidden pasts of multiple suspects whose lives intersect with a long-forgotten crime. Critics praise its emotional depth and nuanced character study.
What is the content rating for Unforgotten?
Unforgotten carries a TV-MA rating in the United States, indicating content suitable for mature audiences only. The series contains themes of murder, abuse, and morally complex situations. In the United Kingdom it was rated 15 by the BBFC, and it received an 18 classification in both Germany and France.
Has Unforgotten won any awards?
Unforgotten has received multiple BAFTA nominations over its run. Nicola Walker earned widespread critical acclaim for her portrayal of DCI Cassie Stuart. The series has also been recognised at the Broadcasting Press Guild Awards and the Royal Television Society Awards, cementing its reputation as one of Britain's finest crime dramas.
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