UK TV · Quest Red
A Killer's Mistake: all seasons, episodes and where it airs in the UK
Quick answer · UK
A Killer's Mistake is a UK crime and documentary series on Quest Red, running since 2018, with 5 seasons and 50 episodes.
No new season of A Killer's Mistake has been confirmed yet; the latest episode aired on Saturday, May 3, 2025.
A Killer's Mistake seasons (5 seasons, 50 episodes)
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 10 | October 2, 2018 | December 11, 2018 |
| Season 2 | 10 | March 25, 2020 | May 27, 2020 |
| Season 3 | 10 | September 29, 2022 | November 24, 2022 |
| Season 4 | 10 | January 6, 2024 | March 9, 2024 |
| Season 5 | 10 | March 1, 2025 | May 3, 2025 |
Original UK air dates on Quest Red.
Common questions
How many seasons of A Killer's Mistake are there?
A Killer's Mistake has 5 seasons and 50 episodes, first airing on Tuesday, October 2, 2018.
Is A Killer's Mistake still on?
No new season of A Killer's Mistake has been confirmed yet; the latest episode aired on Saturday, May 3, 2025.
What channel is A Killer's Mistake on in the UK?
A Killer's Mistake airs on Quest Red. Past episodes are often available on the broadcaster's own catch-up app.
Who stars in A Killer's Mistake?
The main cast includes Will Hanrahan.
Source: TVmaze (CC BY-SA), retrieved October 11, 2026.