Line of Duty star Martin Compston, who plays DS Steve Arnott, has dropped a major hint about the identity of H in a brand new video posted to his Twitter account.
The video stars a character not seen since series two of the police drama, the sixth series of which is set to conclude on Sunday night.
Martin, 36, can be seen in the video singing the alphabet, but when he gets to the letter H, Mark Bonnar, who plays DCC Mike Dryden, pops up beside him and stares into the camera. "Oh, hello Mark," says Martin, before the pair both burst out laughing.
The 13-second video appears to reveal Dryden's return in the series finale on Sunday, after he was disgraced and given a suspended sentence for perverting the course of justice.
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