New Line of Duty trailer hints we WILL find out H's identity in series finale

Series six comes to an end on Sunday

Author: Alex RossPublished 26th Apr 2021
Last updated 19th May 2022

It's been on our TV screens since 2012 and despite last night's (Sunday 25th April) episode becoming the most-watched drama in 13 years, it looks like Jed Mercurio's Line of Duty could come to a tantalizing end next weekend.

Since Jed or the BBC haven't yet confirmed a seventh series, viewers are fearing the worst that Sunday night's series finale could be final time we see AC-12 in action trying to find corrupt coppers.

Although series six has been extended to seven episodes, viewers still have a LOT of unanswered questions, with many fearing bosses won't be able to fit everything into Sunday night's hour-long show.

And of course, as well as all of the questions and theories surrounding the Gail Vella murder case, viewers have been waiting years to discover the final member of 'H'.

As we already know, Dot Cottan, Derek Hilton and Gill Biggeloe have all been exposed as being part of the organisation by AC-12 in the past, but as outlined by Cottan in his dying declaration, there's a fourth member still to be unveiled.

If the brand new trailer for Sunday night's series finale is anything to go by, it looks like we may finally get some answers...

Captioning the trailer with: 'Every investigation has led to this…', Superintendent Ted Hastings can be heard saying: "All of these suspicious deaths were orchestrated by one officer in particular, H, the fourth man."

The dramatic trailer then shows Davidson in the back of a prison van with the bent prison officer who was responsible for burning DI Lindsay Denton's hands and breaking Sergeant Farida Jatri's wrist.

Repeatedly throughout the tense trailer, the letter H appears to be dramatised, leading fans to believe we will finally get answers! 👀

Check out all of the technical acronyms you'll need for the Line of Duty series finale:

OCG - Organised Crime Group: Serious crime planned, coordinated and conducted by people working together on a continuing basis, mostly acting in different roles depending on their skills and expertise.

PACE - Police and Criminal Evidence Act: Established in 1984, a code of practice that regulates police powers and protects public rights.

REG 15 - Regulation 15 notice: A notice that advises an officer that a complaint has been made or a conduct matter has come to light that warrants investigation by professional standards department.

RIPA - Regulation of Investigatory Powers Act 2000: An act of Parliament of the United Kingdom, which regulates the powers of the public bodies to carry out surveillance and investigation, and covers the interception of communications.

RTC - Road Traffic Collision

ANPR - Automatic Number Plate Recognition: Technology is used to detect, deter and disrupt criminality at a local, force, regional and national level.

AC-12 - Anti-Corruption Unit 12: A dedicated unit that holds responsibility for investigating corruption within the police force.

CHIS - Covert Human Intelligence Source: A person who establishes or maintains a personal or other relationship with another person for the covert purpose.

AFO - Authorised Firearms Officer: A police office, who has been selected, trained, accredited and authorised by their chief officer to carry a firearm operationally.

ARVs - Armed Response Vehicles: ARVs are crewed by Authorised Firearms Officers to respond to incidents believed to involve firearms or other high-risk situations.

DIR - Digital Interview Recording: Digital device used to record police interviews.

IOPC - Independent Office for Police Conduct: A non-departmental public body in England and Wales which, since 8 January 2018, is responsible for overseeing the system for handling complaints made against forces in England and Wales.

FI - Forensic Investigator: The FI gathers and preserves physical evidence at a crime scene to take to a lab where they examine what they or other law enforcement personal have found.

I.P. Address - Internet Protocol Address: A numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.

SFC - Strategic Firearms Commander: The SFC has overall strategic command of firearms operations, with responsibility and accountability for directions given.

UCO - Undercover Operative: A method use by law enforcement and intelligence agencies. They wear civilian clothes that fit in to avoid detection.


TFC - Tactical Firearms Officer: A TFC provides guidance on the appropriate use in respect of different tactical options involving the deployment of AFOs.

VPN - Virtual Private Network: The extension of a private network that includes links across shared or public networks, such as the Internet.

In other LOD news, viewers are convinced that Marcus Thurwell (James Nesbitt) is still alive, despite the Guardia Civil pronouncing both him and his wife dead after raiding his home in Spain.

Eagle-eyed viewers spotted the lead AFO on the night vision footage looked strikingly similar to Thurwell, with many conducting theories about his involvement and his relationship to DCI Davidson.

Hopefully all will be answered in the series six finale on Sunday 2nd May at 9pm on BBC One.

Now read:

Line of Duty fans think they've identified ANOTHER bent copper

The best TV crime dramas to binge watch right now

Line of Duty fans left in hysterics at Alexa's response to 'Who is H?'

How to listen to Northsound 1:

For great music, brilliant banter and incredible competitions tune into Northsound 1 on 96.9, 97.6 or 103.0 FM, online, on our Northsound app, your DAB digital radio, or say ‘Play Northsound 1’ on your Smart Speaker. We give you the biggest hits from the world’s hottest artists. You’ll find new favourites every day and hear the songs you've missed from the last few years.