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While another added: Okay who else is ready for this? #Line of Duty.
Another Line of Duty fan wrote: Imagine being the actor who plays H waking up tomorrow to your face on the front of every tabloid newspaper in the UK.
Elsewhere actor Sanjeev Bhaskar wrote: So final episode of this series of Line of Duty in just over an hour so I ll say in advance.that s exactly what I thought was going to happen.
Prior to tonight s show, fans shared their excitement and began to speculate who H could be
Detective Steve Arnott finally speaks with a doctors from Occupational Health after putting off a drugs test
The series six finale of the hugely popular BBC drama airs this Sunday at 9pm
Some 12 million viewers are expected to tune into Jed Mercurio s police crime thriller - with the promise of H finally being unmasked
On social media, people have admitted the show airing tonight - in a 90-minute special - is the highlight of their bank holiday weekend
Line of Duty fans believe Chief Constable Philip Osborne is the most likely to be unveiled as H in this Sunday s series finale, a poll has revealed.
The BBC drama has gone from strength to strength since its release, growing from an initial audience of four million adults to more than 11 million tuning in for the current series penultimate episode.
The show sees the officers of police anti-corruption unit AC-12 pitted against the mysterious antagonist known only as H or the fourth man , who heads up an organised crime syndicate controlling events from the shadows and potentially from within AC-12 itself.
Martin Compston has admitted he finds his Line Of Duty character DS Steve Arnott arrogant and said nobody can understand how he s had so many romances.
The actor, 36, spoke to the Shrine Of Duty podcast on Wednesday ahead of the last episode this weekend, and amusingly said DS Arnott is the overdressed w r at work so he didn t get why he managed to attract so many women over the years.
Reflecting on his character, and his love of waistcoats, Martin said: Steve does see himself as Sherlock Holmes, he sees himself as a super detective. He s the overdressed w r at work : Line Of Duty star Martin Compston claimed his character Steve Arnott is arrogant while speaking on a podcast on Wednesday