BBC Line of Duty star Adrian Dunbar says season seven will reveal who H really is birminghammail.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from birminghammail.co.uk Daily Mail and Mail on Sunday newspapers.
Line Of Duty s Jed Mercurio says he keeps things flexible when writing the hit show - and storylines can change depending on the stars schedules
It was revealed during Sunday night s eagerly-anticipated finale that The Fourth Man - also known as H - was Superintendent Ian Buckells
Initially portrayed as a hapless character, it was revealed that he was in fact the criminal mastermind who had formed the secret network of bent coppers
Many clues appear to have come to light since the show hit screens in 2012, including a real life note from actor Nigel Boyle, who tipped off fans in 2017
The series creator, 55, detailed how he dropped a sign the officer was bent back in 2012 after he allowed the caddy Dot Cottan to speak with Tommy Hunter alone in the back of a van.
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When last man standing DSU Ian Buckells smugly asked Supt Ted Hastings if heâd like a glass of water, I honestly thought the gaffer might lean across the desk and punch that smirk clean off his face.