Line of Duty season 4: Viewers baffled as detectives fail to notice THIS major clue
DCI Roz Huntley (played by Thandie Newton) was brought in for an intense interrogation by AC-12 and was visibly struggling to use her injured arm.
The injury, which she obtained just weeks before when Tim (Jason Watkins) was killed, had become so badly infected that it looked as though gangrene might set in.
While the police officer could barely move her arm and looked ill, Ted Hastings (Adrian Dunbar) seemed completely unfazed by her behaviour and failed to notice her bloody wound.
Fans of the BBC series were left exasperated by the detectives failure to notice the major clue in the death of Tim.