The mysterious disappearance of a Scottish fishing trawler and a death on-board the submarine HMS Vigil bring the police into conflict with the Navy and British security services. DCI Amy Silva and DS Kirsten Longacre lead an investigation on land and at sea into a conspiracy that goes to the very heart of Britain’s national security.
Is this the best episode?
The peak run. Top 40% of seasons by average rating — consecutive, with an average of 7.75.
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Suranne Jones
DCI Amy Silva
Rose Leslie
DS Kirsten Longacre
Gary Lewis
DSU Colin Robertson
Tornike Gogrichiani
Fyodor Zamorin
All 18 episodes plotted by IMDb rating
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6 episodes • 2021Avg: 7.8Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Aug 29, 2021 | 7.8 |
| 2 | Episode 2 | Aug 30, 2021 | 7.8 |
| 3 | Episode 3 | Sep 5, 2021 | 7.7 |
| 4 | Episode 4 | Sep 12, 2021 | 7.6 |
| 5 | Episode 5 | Sep 19, 2021 | 8.0 |
| 6 | Episode 6 | Sep 26, 2021 | 7.6 |
6 episodes • 2023Avg: 7.2
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Dec 10, 2023 | 7.3 |
| 2 | Episode 2 | Dec 11, 2023 | 7.2 |
| 3 | Episode 3 | Dec 12, 2023 | 7.2 |
| 4 | Episode 4 | Dec 17, 2023 | 7.1 |
| 5 | Episode 5 | Dec 18, 2023 | 7.3 |
| 6 | Episode 6 | Dec 19, 2023 | 7.2 |
6 episodes • 2026Avg: 7.6
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Episode 1 | Aug 30, 2026 | 7.5 |
| 2 | Episode 2 | Aug 31, 2026 | 7.6 |
| 3 | Episode 3 | Sep 6, 2026 | 7.4 |
| 4 | Episode 4 | Sep 7, 2026 | 7.4 |
| 5 | Episode 5 | Sep 13, 2026 | 5.5 |
| 6 | Episode 6 | Sep 14, 2026 | 10.0 |
0 episodes • TBA
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0 episodes • TBA
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