The BBC has released a first-look trailer for this Sunday's series six finale of Line of Duty.
The penultimate episode drew the show's biggest overnight audience to date, in the process becoming the BBC's most-watched drama in more than a decade.
At least 11 million are expected to watch the final episode live this weekend - and the trailer suggests that viewers may be rewarded with the long-awaited reveal of H, aka 'The Fourth Man'.
Watch the trailer below:
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