4 - 6Royal Hunting GroundApr. 30, 2017- 4 - 5Lying NestApr. 23, 2017
- 4 - 4Moral SuperiorityApr. 16, 2017
- 4 - 3In the TrapApr. 09, 2017
- 4 - 2Who Sows the WindApr. 02, 2017
- 4 - 1In the Shadow of the TruthMar. 26, 2017
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.
