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Unforgotten · BingeGremlin

Drama · Crime · Mystery

Unforgotten

Unforgotten. 2015 · ITV1

Unforgotten

2015United KingdomEnglish6 seasons36 episodes46 min

DramaCrimeMysteryabout two weeks of evenings

London police detectives Cassie Stuart and Sunny Khan investigate historic cold cases involving missing persons, murder and long-hidden secrets.

UnforgottenWatch on YouTube

London police detectives Cassie Stuart and Sunny Khan investigate historic cold cases involving missing persons, murder and long-hidden secrets.

Seasons

Season 1
6 episodes · 2015
Season 2
6 episodes · 2017
Season 3
6 episodes · 2018
Season 4
6 episodes · 2021

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Season 5

6 episodes · 2023

Season 6

6 episodes · 2025

Episode ratings

Cast

Sanjeev BhaskarDS Sunil 'Sunny' Khan36 ep
Carolina MainDC Fran Lingley36 ep
Jordan LongDS Murray Boulting36 ep
Nicola WalkerDCI Cassie Stuart24 ep
Lewis ReevesDC Jake Collier24 ep
Peter EganMartin24 ep
Sinéad KeenanDCI Jessica 'Jessie' James12 ep
Pippa NixonDC Karen Willetts12 ep
Alastair MackenzieJohn Bentley12 ep
Georgia MackenzieDr. Leanne Balcombe11 ep
Kate RobbinsKate11 ep
Andrew LancelSteve James10 ep
Trevor EveSir Phillip Cross6 ep
Ian McElhinneyLord Tony Hume6 ep
Bernard HillFather Robert Greaves6 ep
Hayley MillsLady Emma Hume6 ep
Tom CourtenayEric Slater6 ep
Martina LairdEbele Falade6 ep

Created by: Chris Lang
Status: Returning Series
Network: ITV1
First aired: 2015-10-08
Last aired: 2025-02-24
Languages: English
Elsewhere: IMDb

Reviews

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Season 1
6 episodes · 2015
Season 2
6 episodes · 2017
Season 3
6 episodes · 2018
Season 4
6 episodes · 2021

Season 5

6 episodes · 2023

Season 6

6 episodes · 2025

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No one has said how this one feels yet.

TMDB: 7.5/10; 204 votes

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Where to watch in United States

Stream

Amazon Prime Video
PBS
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Free

KQED

Buy

Amazon Video
Apple TV Store
Google Play Movies
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Availability data from JustWatch

under 6
6
7
8
9+
no votes

S1

7.9
7.8
7.9
7.4
7.7
8.5

S2

6.5
7.8
7.5
7.5
7.7
8.4

S3

7.6
6.2
7.4
7.4
7.6
8.2

S4

6.5
7.2
7.1
6.9
7.3
8.2

S5

6.9
7.3
7.3
7.3
7.3
7.1

S6

6.2
7.3
5.5
5.5
5.8
5.8

Community ratings from TMDB. Titles of episodes you haven't watched stay hidden.