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Line of Duty star Martin Compston has said the season finale this Sunday (2 May) could be the last episode ever, but added that fans can expect a 'perfect ending'. If you want to get hyped for the big end-of-series showdown, here's the trailer:
The 36-year-old, who plays DI Steve Arnott, said that the actors from the show haven't even been told whether there is going to be another series.
Given the figures the show keeps dragging in for the BBC, you'd have to imagine they'll want Jed Mercurio to get stuck into some more of it.
This could also mean that this Sunday will see fans get the answers that they have craved for so long, too.
Mercurio himself recently told Radio Times: "We're in a situation where it's not entirely clear that there will be a seventh series."
Speaking to companion podcast Shrine of Duty, Compston said: "It's different elements this year, because we have to look it in terms of, do people want us back? You don't want to overdo it.
"Ten 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.
"We don't know [if there will be another series]. That's nothing new. Jed will only do it if there's a story to be told."
He continued: "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."
A teaser trailer for the big series finish on Sunday suggests that at least some of the years-old mysteries are set to be resolved, and it leads with the tagline: "Every investigation has led to this."
Does that mean that we'll finally learn the identity of 'H' or 'the fourth man' as we now know them?
We'll just have to wait until Sunday night to find out.
While this could be the end of a number of storylines, it's increasingly likely the BBC will want to string the show out for a bit longer, at least.
Eleven million people tuned in to watch the penultimate episode last Sunday, which made it the most watched UK TV drama episode since the Doctor Who Christmas Day special from 2008.
Line of Duty will conclude on Sunday at 9.00pm on BBC One.
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