Line of Duty fans take to social media as they count down the minutes

Line of Duty fans across the nation are counting down the minutes until the final installment of the nail-baiting drama airs and the mysterious antagonist 'H' is finally revealed.

Seasoned fans have been taking to social media in their droves to share their excitement as they prepare to watch the series finale of the long-running BBC drama.

The series, which hit more than 11 million tuning for the current series' penultimate episode, will finally see the puzzle over journalist Gail Vella's murder solved and the elusive 'fourth man' colluding with the organised crime group (OCG) revealed.

Taking to Twitter one social media user wrote: 'So excited for Line of Duty finale and to finally found out who H is.'

While another added: 'Imagine being the actor who plays 'H' waking up tomorrow to your face on the front of every tabloid newspaper in the UK.' 

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line of Duty fans across the nation are counting down the minutes until the final installment of the show

line of Duty fans across the nation are counting down the minutes until the final installment of the show

Another user wrote: 'Me trying to get home on time for the Line of Duty final episode.'

Meanwhile one person said: 'Roll on 9pm. Can't believe it's the end of the series! Who is H?

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.'

Yesterday fans of Line of Duty described the wait for tonight's finale as 'torturous', with around 12 million viewers planning to spend their Bank Holiday Sunday finding out the identity - finally - of evasive criminal 'H'. 

Social media was awash with people posting about their excitement, with many saying the nation's bank holiday day off tomorrow will offer tense viewers 'a chance to recover'.

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The cinematic finale is even being screened in beer gardens across the country by landlords also transfixed by the show.

Seasoned fans have been taking to social media in their droves to share their excitement as they prepare to watch the series finale

 Seasoned fans have been taking to social media in their droves to share their excitement as they prepare to watch the series finale

Yesterday Twitter saw memes galore being shared as the build-up reached fever pitch with #lineofdutyfinale and #lineofduty trending on Twitter on Sunday morning. 

While many are using the familiar faces of the main characters - including DI Kate Fleming (Vicky McClure), Superintendent Ted Hastings (Adrian Dunbar) and DI Steve Arnott (Martin Compston) - others have shared photos of how H appears to be infiltrating their bank holiday.   

@DuckRecordings offered up a snap of his daughter's birthday balloons rearranged to say 'Happy H Day'. 

Elsewhere, @RebeccaMarett was getting subliminal messages from the way her eggs were lined up in the box - spelling out H. 

She wrote: 'Everything's pointing to #LineofDutyFinale tonight. #breakfast'

@GemmaC_PR added after spotting a pink floral H in her daughter's bedroom: 'Mother of god, you know you're excited about the #LineofDutyFinale when you're seeing clues in your own daughter's bedroom.'

Cometh the hour! The Bank Holiday weekend for many is all about BBC One's feature length finale of Line of Duty, which promises to unmask the identity of 'H' (Pictured: AC-12 - DS Steve Arnott (Martin Compston), DC Chloe Bishop (Shalon Brune-Franklin) and Superintendent Ted Hastings (Adrian Dunbar)

Cometh the hour! The Bank Holiday weekend for many is all about BBC One's feature length finale of Line of Duty, which promises to unmask the identity of 'H' (Pictured: AC-12 - DS Steve Arnott (Martin Compston), DC Chloe Bishop (Shalon Brune-Franklin) and Superintendent Ted Hastings (Adrian Dunbar)

@JessCiara wrote that putting the biggest TV event of the year out on a bank holiday was thoughtful of the BBC, saying: 'Excellent work by the BBC to schedule the #LineofDutyFinale on a bank holiday weekend. 

'The nation will need tomorrow to recover. I’m taking to the streets in celebration if we find out who H is. #LineOfDuty' 

One Line of Duty superfan has even created a huge evidence board in a bid to finally unmask the mysterious villain 'H'. Mother-of-three Katie Rogers has watched each episode of the current series five times at least, plus as many as 50 separate viewings of each of the show's previous episodes.

She claims rewatching them so many times enables her to find new hints and clues that many just watching live may have missed. 

The 40-year-old from Winterborne Kingston in Dorset, told the Times: 'The show is so great and interactive.

A Line of Duty superfan has created a huge evidence board in a bid to finally unmask the mysterious villain 'H'

A Line of Duty superfan has created a huge evidence board in a bid to finally unmask the mysterious villain 'H'

Mother-of-three Katie Rogers has watched each episode of the current series five times at least, plus as many as 50 separate viewings of each of the show's previous episodes

Mother-of-three Katie Rogers has watched each episode of the current series five times at least, plus as many as 50 separate viewings of each of the show's previous episodes

Vicky McClure and Marin Compston star in the drama as Kate Fleming and Steve Arnott

Vicky McClure and Marin Compston star in the drama as Kate Fleming and Steve Arnott 

'Over the last 12 months [of lockdowns] we've got more and more disconnected and not been able to see people and this has brought us back together. 

'I think I speak to my family twice as much since the show started compared to before.'

She shares a passion for identifying bent coppers with her parents, and will be watching the finale with them tomorrow night.  

Many others, however, will be heading to pubs, who are offering special screenings for what is likely to be ones of the biggest TV events of the year. 

The Angel Hotel in Uddingston near Glasgow is not broadcasting the Old Firm derby between the two city giants, Rangers and Celtic, but has set up an 85-inch screen so it can show the drama in the evening. 

Philip Osborne

Patricia Carmichael

Some 22% of Line of Duty fans believe Philip Osborne (left) is 'H', with 19% believing it is Patricia Carmichael (right)

Ahead of the finale, a poll found fans believe Chief Constable Philip Osborne is the most likely to be unveiled as 'H', a poll has revealed.

The series 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.

Ted Hastings

Marcus Thurwell

Six per cent of fans think it is Ted Hastings (left) while four per cent say it is Marcus Thurwell (right)

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.

With seasoned viewers desperate to finally learn the anonymous villain's identity, YouGov Direct has surveyed fans over who they believe is the true mastermind.

Kate Fleming

Jo Davidson

Line of Duty fans are less suspicious of Kate Fleming (left) and Jo Davidson (right)

Martin Compston stars as DI Steve Arnott in the drama alongside Vicky McClure as DI Kate Fleming and Adrian Dunbar as Superintendent Ted Hastings

Martin Compston stars as DI Steve Arnott in the drama alongside Vicky McClure as DI Kate Fleming and Adrian Dunbar as Superintendent Ted Hastings

Osborne, played by Owen Teale, is the prime suspect, according to nearly a quarter of fans, with 22% believing he is the individual pulling the strings.

The chief constable certainly fits the 'high ranking officer' bill, and has the power to punish anyone who fails to do his bidding.

In the last episode, it appeared as if fan favourite Superintendent Ted Hastings suspects Osborne, asking the arrested detective Jo Davidson during her interrogation if the 'fourth man' is the chief constable.

Some also suspect Osborne's 'enemies within' speech during the closing montage may go on to prove significant.

The next most popular suspect is Anna Maxwell Martin's Detective Chief Superintendent Patricia Carmichael - who swooped in towards the end of the last series to interrogate Hastings - with 19% of viewers believing she is 'H'.  

Elizabeth Rider, who plays Deputy Chief Constable Andrea Wise, is fingered as the culprit by 6% of Line of Duty viewers, while the same proportion think that commanding officer Hastings himself is 'the fourth man' behind the series' events.

Some 4% of viewers think that newcomer Marcus Thurwell could be the criminal mastermind, and the same proportion think it could be the show's former Police and Crime Commissioner Rohan Sindwhani.

Fans are less convinced that the series' other lead AC-12 characters, Detective Inspectors Kate Fleming and Steve Arnott are behind the plot, at 3% and 2% respectively.

The show's writers and cast have done well to mask the identity of the villain despite H's central role in the show, meaning nearly one in five viewers (19%) have no clue about who they could be. 

It comes as star Martin Compston - who plays DI Steve Arnott - has revealed the BBC drama could be coming to an end sooner than everyone thinks. 

Martin - who previously revealed that executive decisions about the series are 'above his pay grade' - cast doubt on the show's future during an appearance on The Jonathan Ross Show. 

Coming to an end? It's the show that has gripped the nation, yet Line Of Duty star Martin Compston has revealed the drama could be coming to an end sooner than everyone thinks

Coming to an end? It's the show that has gripped the nation, yet Line Of Duty star Martin Compston has revealed the drama could be coming to an end sooner than everyone thinks

In scenes due to air on Saturday's episode of the ITV show, Martin, 36, said: 'We won’t come back just for the sake of it. That’s for sure. We’ll come back if there’s a story to tell.

'If it ends well maybe sometimes it is best to leave it. But genuinely we don’t know.'

The admission comes after Martin teased that fans will get some 'big answers' during Sunday's finale, and admitted he believes it could be the 'perfect ending' to the police drama.

Speaking on the Shrine Of Duty podcast, Martin confessed that he thinks Sunday's episode could be the best way to wrap up the 'story arch' - but he refused to rule out another series.

When quizzed on whether viewers will learn who the elusive 'H' is, Martin said: 'I wouldn't quite go the Jo Davidson no comment route - but what I will tell you is I think there's a lot of pay offs coming this Sunday.

'There's a lot of big answers and it's deserved, people have stuck with us for a long time, so there comes a point where the story arch comes to an end.'

Martin also touched on whether series seven is likely, after show bosses previously claimed they believed the current season would be the last.

He said: 'We don't know [if there will be another] - that's nothing new. Jed always takes time after a series, like a couple of months.

'There's a lot of stuff above my pay grade like analytics and audience scores. He takes the emotion out of it and looks at all that.'

Admitting it could be the 'perfect ending', he said: 'It's different this year, because we have to look it in terms of, do people want us back? 10 years in you start to think of legacy, and if it goes down that well it might be the perfect ending.''But then we might go another couple of months and... what I will say is we won't do one just for the sake of doing it. Jed will only do it if there's a story to be told.'

Line of Duty: 18 questions that NEED to be answered in next week's grand finale - from why Kate and Jo fled after shooting Ryan Pilkington to what is under the concrete floor (and will we FINALLY discover the identity of H?)

Line of Duty fans were treated to yet another hour of nerve-shredding action last night, with the penultimate episode leaving its record-breaking 11 million viewers desperate for answers. 

After shooting bent copper and OCG stalwart Ryan Pilkington dead, DI Kate Fleming (Vicky McClure) and DCI Jo Davidson (Kelly Macdonald) - who had orchestrated the shady meet up to 'get rid of Fleming' - went on the run, before they were caught after DCS Patricia Carmichael (Anna Maxwell-Martin) put trackers on all AC-12 vehicles.

During a tense interview scene - which ran for 29 minutes - Jo learned the sordid truth about her family history but refused to give away all she knows about the OCG and its elusive leader H when pressed by Superintendent Ted Hastings (Adrian Dunbar) - whose questions were repeatedly shut down by an increasingly shifty-looking Carmichael. 

Meanwhile Marcus Thurwell (James Nesbitt) - the retired former detective chief inspector suspected of being in league with organised crime and even in the frame for being H, the corrupt officer now referred to as the 'fourth man' - was found dead at his address in Spain, leaving Hastings exasperated as time is running out before he's forced into retirement and AC-12 is disbanded.

And DS Chris Lomax seemed less than enthusiastic when Kate suggested searching under the floor at the warehouse the OCG was using to workshop firearms - so, is he hiding something, and what does she suspect? 

Today the BBC released a teaser trailer promising an action-packed finale complete with a police standoff, the return of balaclava men and the discovery of a written note with THAT 'definately' misspelling.

With yet another agonising seven days to wait until the next installment of the crime drama, there are still so many questions that need answering. Here, FEMAIL unpicks the top 18 ahead of this Sunday.

In a teaser released on Monday, viewers can be certain of an action-packed finale episode with a police standoff, the return of balaclava men and that 'definately' misspelling

In a teaser released on Monday, viewers can be certain of an action-packed finale episode with a police standoff, the return of balaclava men and that 'definately' misspelling

1. Why did Kate and Jo flee after shooting Ryan Pilkington?

Fans expressed their relief on social media after it was revealed Kate survived the tense shoot out in the lorry park at the end of episode five.

It was bent copper Ryan who came a cropper, with firearms trained Kate shooting him twice in the chest.

In a Thelma and Louise-inspired , the two women then fled the crime scene in Kate's service vehicle, after she quite rightly had a go at her colleague for luring her to her death. To buy her trust, Jo took Kate's gun and touched it so that her prints were on the murder weapon - making it look like she killed Ryan.

The pair then abandoned Kate's car before heading to Steve's garage - at which point Kate revealed they have keys to each other's homes for emergencies - and borrowed his motor. 

A gripping hunt for the pair commenced, with Carmichael warning officers that the duo were considered to be 'armed and dangerous'. But the question remains, why did Kate do a runner?

Line of Duty fans were treated to yet another hour of nerve-shredding action last night, with the penultimate episode leaving viewers desperate for answers - including why Kate fled after lawfully shooting Ryan Pilkington

Line of Duty fans were treated to yet another hour of nerve-shredding action last night, with the penultimate episode leaving viewers desperate for answers - including why Kate fled after lawfully shooting Ryan Pilkington

Fans expressed their relief on social media after it was revealed Kate survived the tense shoot out with Ryan in the lorry park at the end of episode five

Fans expressed their relief on social media after it was revealed Kate survived the tense shoot out with Ryan in the lorry park at the end of episode five

It seems strange she'd want to protect Jo after she arranged to have her murdered, and it was even weirder that she was reluctant to surrender at gunpoint when caught.

It certainly cast doubt in some viewer's minds over her intentions, as they couldn't understand why she would run if she lawfully killed Ryan. Her actions even left some wondering if she could be the illusive 'H'.

Surely Kate isn't bent? She's certainly got some explaining to do... 

2. What is under the concrete floor at the warehouse? 

After she was released from prison, Kate got straight back to work, heading with Steve to the OCG's weapon's workshop which was being combed by forensics. 

They were met by DS Chris Lomax - who was reprimanded by Kate for being a 't**' after giving off distinctly frosty vibes towards Steve.

It turned out the OCG had been using the warehouse to workshop firearms, but with the enormous machinery impossible for just two people to move - remember the two OCG members that were shot dead by AC-12 last week? - Kate is suspicious about what they were trying to cover up.

Kate ordered GPR to discover what is lurking underneath the concrete floor in the OCG weapons workshop

Kate ordered GPR to discover what is lurking underneath the concrete floor in the OCG weapons workshop

With Lomax poised to call off forensics, she demanded they call out ground penetrating radar (GPR) to find out what's under the concrete floor. 

So what does she suspect might be lurking down there? More dead bodies? Or could it be the incriminating evidence they're looking for to uncover the identity of the 'fourth man'?

3. Is Marcus Thurwell really dead?

Fans were stunned last night when it appeared James Nesbitt's character Marcus Thurwell was killed off before he even appeared on screen.

With AC-12 watching via a video link, Guardia Civil police officers stormed his Spanish home and found two bodies on the bed - and judging by the sound of flies, it looked like they'd been there a while.

Line of Duty fans were stunned last night when it appeared James Nesbitt's character was killed off before he even appeared on screen - but some viewers are convinced it was a cover-up

Line of Duty fans were stunned last night when it appeared James Nesbitt's character was killed off before he even appeared on screen - but some viewers are convinced it was a cover-up

Some fans believe the Spanish captain was Thurwell in disguise

Towards the end of the nail-biting penultimate episode, Guardia Civil police officers stormed Marcus Thurwell's Spanish home, while the AC-12 team watched via video link. They found Thurwell's body

Towards the end of the nail-biting penultimate episode, Guardia Civil police officers stormed Marcus Thurwell's Spanish home, while the AC-12 team watched via video link. They found Thurwell's body (right) - but some fans believe the Spanish captain was Thurwell in disguise (left)

The police officer leading the raid confirmed the dead man's identity as retired detective chief inspector Thurwell, but viewers weren't given a clear view of his body.

So, was it really him? Some fans are convinced that Thurwell was in fact the Spanish AFO leading the raid on his home, after noticing a likeness between the two men.

Surely an actor of Jimmy Nesbitt's calibre will at least be given a scene... but if he is really dead, who killed him, and why?

4. What more does Jo know - and who did she think was her father?

Jo seemed genuinely stunned when it was revealed her 'uncle' Tommy Hunter is in fact her father. She'd previously told Kate that her mum was Tommy’s sister, while her dad was 'a bent police officer'.

So who did she think her real father was? She revealed her mother, Samantha Davidson - nee Hunter, was raped at 15 and fell pregnant, but she 'never knew the details'. 

Jo seemed genuinely stunned when it was revealed her 'uncle' Tommy Hunter is in fact her father. She'd previously told Kate that her mum was Tommy’s sister while her dad was a bent police officer

Jo seemed genuinely stunned when it was revealed her 'uncle' Tommy Hunter is in fact her father. She'd previously told Kate that her mum was Tommy’s sister while her dad was a bent police officer

Samantha was sent to Glasgow under her mother's maiden

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