Most reactions to the Line of Duty finale were ones of disappointment, so it's little surprise people are wondering whether there could be a seventh season.
Since debuting in 2012, the BBC drama has captivated audiences, becoming an event television experience in the post-event era for the UK and beyond.
But the finale left little doubt that it was the last ever episode, which echoes statements made by cast members before the episode aired.
Was Season 6 the last season of Line of Duty?
Before the last episode aired, Martin Compston heavily hinted this was the end.
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Huge thanks to @martin_compston for coming on for the chats ahead of the #LineOfDuty finale!
Castbox: https://t.co/Xp1n1YFwlY pic.twitter.com/xitaN18bsL
- Shrine of Duty (@shrinepod) April 28, 2021
"You know, people have stuck with us for such a long time," he told a recent podcast.
"I think there comes a point where the natural story act that's been running all these years is coming to an end."
Echoing Mercurio's recent comments about the uncertainty around a seventh season, Martin went on to add that the cast and crew "genuinely" don't know about the show's future.
"But that's nothing different for us," he concluded.
This tweet from series creator Jed Mercurio during the finale made it clear this is the end.
Working with @Vicky_McClure @martin_compston #AdrianDunbar has been the highlight of my career. Thanks to the rest of the cast, our brilliant crews and the production team @worldprods @BBCOne @BBCTwo for six incredible seasons. https://t.co/IYAdSwZKTQ- Jed Mercurio (@jed_mercurio) May 2, 2021
And Martin Comptson echoed the thoughts of Mercurio and his co-star Vicky McClure.
Been a wild few weeks and mental 10years with the most amazing cast & crews. None more so than the 3 below who I'd be lost without. A job of a lifetime only made possible by the fans tuning in series after series, for that I can't thank you all enough. Answers coming? Definately pic.twitter.com/3DShji8WEH- martin compston (@martin_compston) May 2, 2021
There is some good news for Line of Duty fans, however. Martin Comptson will be returning in a new series called Vigil "from the makers of Line of Duty" - a murder mystery set on a nuclear submarine - later this year.
Sadly, he won't be wearing any waistcoats as he plays a member of submarine's crew, unless he's wearing them under his uniform. Now that would be a reveal.