IT’S the TV show everyone is talking about - and Bradford actor Natalie Gavin was at the centre of a dramatic plot twist in Line of Duty’s nail-shredding conclusion.

SPOILERS AHEAD: Don't read further if you haven't seen S5E6 of Line of Duty yet.

Bradford Telegraph and Argus:

Still here? Great. Don't say you weren't warned...

Natalie played PC Martina Tranter in the hit BBC1 police drama and on Sunday evening nearly 10 million viewers saw her turn out to be a knife-wielding corrupt member of the force. Fans were gripped as Tranter stabbed Gill Biggeloe, the Police and Crime Commissioner's legal counsel, who it emerged had framed Anti Corruption Unit 12 commander Ted Hastings.

It was Hastings’ team, DI Kate Fleming and DS Steve Arnott, who discovered that Biggeloe had recruited undercover cop John Corbett for the Organised Crime Group, falsely telling him that Hastings was responsible for his mother’s death, which led to his personal vendetta.

Following tense interrogation scenes, AC-12 prepared to take Biggeloe into custody and PC Tranter suggested she use the toilet first, under her guard. As Biggeloe came out of a cubicle Tranter, presumably under orders to kill her, came at her with a knife, but Biggeloe fought back. When Fleming and Arnott heard screams they rushed in, and Arnott shot Tranter.

In one of the final scenes, we learned Arnott had been exonerated in the Tranter shooting, but he was left shaken by it - having confessed to Fleming that he'd never shot anyone before - and it seemed to be taking a toll on his health.

Natalie, from Buttershaw, first appeared in episode five of this series of Line of Duty - the most watched show on television this year. PC Tranter was in AC-3, the team led by DCS Patricia Carmichael who was determined to expose Hastings as the head of police corruption, known as "H".

We last saw Tranter being taken away on a stretcher, still alive. The BBC has confirmed there will be a sixth series of Line of Duty, but viewers will have to wait to see whether or not Tranter is in it.

As a fan of the show, Natalie said she was thrilled to be part of it, joining a cast that included Adrian Dunbar, Anna Maxwell Martin, Vicky McClure and Martin Compston.

“The whole job from start to finish was a whirlwind," said Natalie, who played Andrea Dunbar in 2010 film The Arbor and has been in TV dramas such as Shameless, Prisoners' Wives and The Syndicate.

"I was totally pushed out of my comfort zone with this one, but in the best way because the characters I know so well and love are normally sat on the other side of the table. From the moment I landed in Belfast to film it, the cast and crew treated me like one of the family. I have so many amazing memories - this was a job I won’t forget in a hurry."