Line of Duty Season 4
Episode List - Line of Duty - Season 4
Season Description
Line of Duty Season 4 Watch Online - 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.
