Don't miss a thing by getting the day's biggest stories sent direct to your inbox Line of Duty fans have been watching the hit show long enough to at least predict every twist and turn.
Whether they get it right, however, is another matter. But after a thrilling penultimate episode on Sunday night, viewers of the BBC One cop drama have many theories - as well as questions - ahead of the final episode of series six.
That includes whether DCI Patricia Carmichael is in fact 'H' after fans spotted what they think is a crucial clue and links back to a series three character.
During Sunday night's episode, viewers saw DI Joanne Davidson dragged in for questioning, led by Carmichael alongside Superintendent Ted Hastings and DI Steve Arnott in
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