Series 4

The fourth series sees AC-12 facing their most devious opponent yet! Under pressure from her superiors, DCI Roz Huntley charges a young man with a series of murders after months of fruitless investigation, but is he guilty? The Chief Forensic Investigator has doubts and turns to AC-12.

1. 1Episode 126 mrt 2017 · 58mDCI Roz Huntley is under intense pressure from her superiors to apprehend a serial murderer after months of fruitless investigation.
2. 2Episode 22 apr 2017 · 1uAC-12 crank up their investigation into Operation Trapdoor. Kate makes progress in her undercover role.
3. 3Episode 39 apr 2017 · 1uAs AC-12 wrestle with the new forensic evidence casting doubt over Tim Ifield, Kate is approached by another woman claiming to have been assaulted by Michael Farmer.
4. 4Episode 416 apr 2017 · 59mRoz's husband Nick is brought in for questioning by AC-12. But while Nick denies any involvement in Steve's attack, his suspicions about Roz mount.
5. 5Episode 523 apr 2017 · 59mDCI Roz Huntley struggles to allay her husband's suspicions. AC-12 find a new angle to pursue their case against her.
6. 6Episode 630 apr 2017 · 58mWhile Nick Huntley faces lengthy questioning, AC-12 remain convinced of Roz's involvement.