The Line of Duty finale trailer is here!

Jen Crothers
·2-min read
Photo credit: BBC
Photo credit: BBC

This article contains spoilers.

The BBC has released the trailer for the season finale of Line of Duty - and by the looks of things, it's full of twists, turns, and surprises.

The seventh and final episode of series 6 will air on Sunday 2 May, but there are still so many questions to answer. Will we find out the identity of H? Is Marcus Thurwell actually dead? And how many times will DCI Carmichael pull that face?

The trailer gives the biggest hint yet as to the identity of H - as a police document which looks like it's from Operation Lighthouse contains that incorrect tell-tale spelling of 'definate', highlighted in purple - followed by DI Kate Fleming (Vicky McClure) and DI Steve Arnott (Martin Compston) giving each other a knowing look.

There's dramatic shoot outs aplenty, the incarcerated DCI Joanne Davidson (Kelly Macdonald) in her prison uniform being transported to an unknown location, asking, "What's going on?".

Photo credit: BBC
Photo credit: BBC

In the least reassuring move of all time, one of those shifty prison guards in the back of the van with her as chaperone. You know, the ones that appeared in episode five and poured a boiled kettle over Lindsay Denton (Keely Hawes)'s hand. So not terrifying at all.

"All of these suspicious deaths were orchestrated by one officer in particular - H," says a voiceover from Superintendent Ted Hastings (Adrian Dunbar). "The fourth man." Then images of Carmichael, Chief Constable Osbourne, Marcus Thurwell, Ted and Kate flash up on the screen in succession. Is that a clue?

The countdown is on!

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