Line Of Duty’s season five finale shock twist shook just about everyone to the core

An explosive end to the season, to be honest.

Line of Duty has been a thing for a few years now, and yet it's only been the past 12 months or so that the show has grabbed the imagination of the public - and totally torn it a new one. It's been a rough enough ride and season five was no different with bent coppers, betrayed members of the force, and generally battered to bits lads who have been making it their duty (minus the line of) to ruin everybody's police-based fun. Last night marked the explosive end to an explosive season. We won't entirely spoil the whole episode for you because that would be pointless. We are, however, here to talk about one thing and one thing only - the twist. For ages now, audiences and force members alike have been struggling to find out who the mysterious 'H' is. Is it Hastings? Is it someone else? Is it Hastings again because that honestly seems to be the only logical explanation? In fact, it ended up being none of the above, because 'H' doesn't actually exist. Or rather, it does, but it's not just one person - it's a group. Yeah, they actually went there. The revelation came as Dot Cottan was trying to explain via morse code that he is actually part of a foursome of cops in senior positions that have connections in organised crime circles. As Dot is (spoilers) dying, DS Steve Arnott notices that his hand is twitching as he struggles to tell the guys what he should have just revealed a long time ago and saved us all this stress - that 'H' isn't an initial at all. "'H' is not an initial," Steve says, just as shocked as we were. "It's a clue. Four dots, four 'Caddys', four police staff in league with organised crime." You got it, mate. Naturally, audiences were divided enough about whether this was a decent pay-off, or simply an easy way out of a storyline that had taken on a life of its own. We'd like to go with the former.