Season: 1 | Episode: 4 | Length: 70m

As the manhunt closes in on Scott and Andy's location, the search for the spycop turns back the clock to 1984 to reveal their identity and the events of that fateful night. At Scotland Yard, Kevin receives a text from Helen arranging to meet. Dawes and Kevin discuss Raggett's suicide and the information from Raggett as to the identity of the officer who stayed behind

With two killers now on the run, Ian is reluctantly forced to call in the Met to assist in the manhunt, worried how the locals will feel about the arrival of the London force after events during the miners' strike. Meanwhile, the hunt for the mystery spycop intensifies as a link to Scott is found. Crime drama, starring David Morrissey