Line of Duty fans reckon they may have rumbled a secret link between Marcus Thurwell and Steph Corbett.The dramatic series reaches its climax on Sunday in what is certain to be a show-stopping finale.We're all waiting on tenterhooks to discover the identity of H – and get a whole load of questions answered.Viewers have spotted a mind-blowing clue that they believe suggests crook Thurwell is not dead at all.Sunday night’s episode of the hit BBC police drama suggested the character was found dead at his villa in Spain, following an AC-12 operation with Spanish cops.Now they have reckon they've spotted a link with Steph and once you hear it, it's hard to remove from your mind.
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