The identity of H, or the fourth 'man', has been exposed according to fans of Line of Duty, who claim they have solved the clues.
Anti-Corruption Unit Detective Inspector Steve Arnott (played by Martin Compston) has previously questioned the gender of the missing link as AC-12 battle organised crime gangs and their links to corrupt coppers.
The arrival of DC Superintendent Patricia Carmichael (Anna Maxwell Martin) at the AC-12 office to officially dissolve the unit and assume control from Superintendent Ted Hastings (Adrian Dunbar) as his team closes in on the connection between murdered journalist Gail Vella, OCG and bent police officers.
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