LINE of Duty revealed the identity of fourth man and mystery figure H in the season six finale - but that hasn't stopped fans from speculating.
For many viewers, the news came as a shock as many expected the finger to be pointed towards dodgy Chief Constable Philip Osborne.
Despite it already being revealed it was Superintendent Ian Buckells in a shocking twist-of-fate, fans still suspect Osborne for being involved.
Some haven't been able to accept the end to the mystery, and have even gone as far to continue to accuse actor Owen Teale after the show.
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