London police detectives Cassie Stuart and Sunny Khan investigate historic cold cases involving missing persons, murder and long-hidden secrets.
Is this the best episode?
The peak run. Top 40% of seasons by average rating — consecutive, with an average of 7.72.
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Sanjeev Bhaskar
DS Sunil 'Sunny' Khan
Sinéad Keenan
DCI Jessica 'Jessie' James
Carolina Main
DC Fran Lingley
Jordan Long
DS Murray Boulting
MyAnna Buring
Melinda Ricci
Maximilian Fairley
Martin ‘Marty’ Baines
Victoria Hamilton
Juliet Cooper
Andrew Lancel
Steve James
Kate Robbins
Kate
Jan Francis
All 36 episodes plotted by IMDb rating
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6 episodes • 2015Avg: 7.9Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Oct 8, 2015 | 8.0 |
| 2 | Episode 2 | Oct 15, 2015 | 7.8 |
| 3 | Episode 3 | Oct 22, 2015 | 7.9 |
| 4 | Episode 4 | Oct 29, 2015 | 7.4 |
| 5 | Episode 5 | Nov 5, 2015 | 7.7 |
| 6 | Episode 6 | Nov 12, 2015 | 8.5 |
6 episodes • 2017Avg: 7.6Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Jan 5, 2017 | 6.5 |
| 2 | Episode 2 | Jan 12, 2017 | 7.8 |
| 3 | Episode 3 | Jan 19, 2017 | 7.5 |
| 4 | Episode 4 | Jan 26, 2017 | 7.5 |
| 5 | Episode 5 | Feb 2, 2017 | 7.7 |
| 6 | Episode 6 | Feb 9, 2017 | 8.4 |
6 episodes • 2018Avg: 7.4
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Jul 15, 2018 | 7.6 |
| 2 | Episode 2 | Jul 22, 2018 | 6.2 |
| 3 | Episode 3 | Jul 29, 2018 | 7.4 |
| 4 | Episode 4 | Aug 5, 2018 | 7.4 |
| 5 | Episode 5 | Aug 12, 2018 | 7.6 |
| 6 | Episode 6 | Aug 19, 2018 | 8.2 |
6 episodes • 2021Avg: 7.2
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Feb 22, 2021 | 6.6 |
| 2 | Episode 2 | Mar 1, 2021 | 7.2 |
| 3 | Episode 3 | Mar 9, 2021 | 7.2 |
| 4 | Episode 4 | Mar 15, 2021 | 7.0 |
| 5 | Episode 5 | Mar 22, 2021 | 7.3 |
| 6 | Episode 6 | Mar 29, 2021 | 8.0 |
6 episodes • 2023Avg: 7.2
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Feb 27, 2023 | 6.9 |
| 2 | Episode 2 | Mar 6, 2023 | 7.2 |
| 3 | Episode 3 | Mar 13, 2023 | 7.3 |
| 4 | Episode 4 | Mar 20, 2023 | 7.3 |
| 5 | Episode 5 | Mar 27, 2023 | 7.3 |
| 6 | Episode 6 | Apr 3, 2023 | 7.1 |
6 episodes • 2025Avg: 6.0Valley of Despair
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Feb 9, 2025 | 6.2 |
| 2 | Episode 2 | Feb 10, 2025 | 7.2 |
| 3 | Episode 3 | Feb 16, 2025 | 5.5 |
| 4 | Episode 4 | Feb 17, 2025 | 5.5 |
| 5 | Episode 5 | Feb 23, 2025 | 5.8 |
| 6 | Episode 6 | Feb 24, 2025 | 5.8 |
