LINE Of Duty fans were astonished last night when Steve Arnott appeared standing in front of a large letter H. As all fans of nicking "bent coppers" know, 'H' is the shadowy criminal mastermind behind police corruption in the hit BBC drama.
Find all the latest updates from Line of Duty with our live blog... So many were shocked to see a literal 'H' appearing on the show when the AC-12 detective turned up in Steph Corbett's kitchen.
Some viewers insisted the suburban home was packed with Hs, like a clue package from The Masked Singer, with the letter appearing twice in the tiles and on the white board.
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