The golden trio is back together again (almost) and all is well in the world. It’s taken three episodes of this series of Line of Duty to reunite Hastings, Arnott and Fleming in the same room, but good things come to those who wait. To recap, DI Kate Fleming ‘cooked her goose’ after tipping off her new boss, DCI Joanne Davidson, that AC-12 were on her trail and planning a raid. Superintendent Ted Hastings, already feeling bitterly let down by Fleming’s decision to quit his team and move to murder, announces that he’s through with her, when he learns she has sided with Davidson.