Line Of Duty's sixth season conclude on Sunday night with a 56. 2% share - recording the network's highest ever overnight rating.
Fans tuned in to watch the nail-biting series draw to a close - and the mysterious antagonist 'H' was finally unmasked as DSI Ian Buckells, played by Nigel Boyle.
Loyal viewers took to social media in their droves to share their frustrations as officers from the police anti-corruption unit AC-12 discovered the identity of the elusive 'fourth man' - leading to a demand for another series of the show.
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