A Killer's Mistake (2018)

Crime · Documentary

Crime series looking at the key errors made by murderers that led to their arrest.

IMDb rating: 6.6 (119 votes)
Episode average: 7.1 +0.5 vs IMDb
Seasons: 2
Streaming (US): Peacock
Language: EN
Type: TV series

Declining trajectory: each season no better than the last. Rising Shows ranks whole shows by the shape of their rating trend rather than one average score, which is how you find a show that got better rather than a show that started well. See every Declining show in the explorer →

Browse all Declining shows in the explorer → Open in Rising Shows app → View on IMDb

Ratings refreshed Oct 3, 2026 · 2 seasons indexed

Seasons

Season 1 (2018)

7.21 avg 8 episodes 6.8 → 7.8 46 min avg

Big finale

Season 1 episodes - IMDb ratings
#	Title	Rating	Votes
1	Paul Hutchinson	6.8	13
2	Nat Fraser	7.2	11
3	Jesse Matthew	7.4	8
4	Stephen Port	7.7	7
5	Kent McGowen	6.8	11
6	William Inmon	6.6	9
7	Tony McCluskie	7.4	6
8	Anthony Sowel	7.8	10

Season 2 (2020)

7.01 avg 10 episodes 7.8 → 6.9 44 min avg

Rollercoaster

Season 2 episodes - IMDb ratings
#	Title	Rating	Votes
1	Thomas Dunkley	7.8	9
2	Malcolm Webster	7.2	7
3	Douglas Perry	6.9	8
4	Chaz Higgs	6.3	8
5	Paul Novak	6.9	8
6	Iain Lawrence	7.0	7
7	Rahim Mohammaddi	6.7	10
8	Kelly Cochrane	7.7	7
9	Sheila Labarre	6.7	8
10	William Howell	6.9	8

A Killer's Mistake (2018)

Seasons

Shows like this