Series going inside the cordon with Gwent Police's dedicated forensic collision investigators, as they deal with serious incidents on the roads.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2018-04-16 | 30 min |
| Season 1 | Episode 2 | Episode 2 | 2018-04-23 | 30 min |
| Season 1 | Episode 3 | Episode 3 | 2018-04-30 | 30 min |
| Season 1 | Episode 4 | Episode 4 | 2018-05-07 | 30 min |
| Season 2 | Episode 1 | Episode 1 | 2020-01-20 | 30 min |
| Season 2 | Episode 2 | Episode 2 | 2020-01-27 | 30 min |
| Season 2 | Episode 3 | Episode 3 | 2020-02-03 | 30 min |
| Season 2 | Episode 4 | Episode 4 | 2020-02-10 | 30 min |
| Season 3 | Episode 1 | Episode 1 | 2021-09-28 | 30 min |
| Season 3 | Episode 2 | Episode 2 | 2021-10-05 | 30 min |
| Season 3 | Episode 3 | Episode 3 | 2021-10-12 | 30 min |
| Season 3 | Episode 4 | Episode 4 | 2021-10-19 | 30 min |
| Season 4 | Episode 1 | Episode 1 | 2023-10-09 | 30 min |
| Season 4 | Episode 2 | Episode 2 | 2023-10-16 | 30 min |
| Season 4 | Episode 3 | Episode 3 | 2023-10-23 | 30 min |
| Season 4 | Episode 4 | Episode 4 | 2023-10-30 | 30 min |
| Editing | William Osman | Colorist |
| Camera | Ian Smith | Additional Camera |
| Editing | Richard Doel | Editor |
| Crew | Phil Chappell | Lighting Camera |
| Editing | Daniel Attwood | Editor |
| Crew | Christina Macaulay | Commissioning Editor |
| Production | Andrea Deere | Production Manager |
| Editing | Mark Hardyman | Editor |
| Sound | Mark Ferda | Original Music Composer |
| Production | Jenny Casterton | Producer |
| Production | Karen Voisey | Executive Producer |
| Directing | Jenny Casterton | Director |