DS Steve Arnott is held at gunpoint in the new trailer for the new series of Line Of Duty.
The police officer, played by Martin Compston, can be seen with a gun to his head, held by an assailant in a black balaclava.
The footage opens with the hijacking of a police transport, which leaves three officers dead and members of anti-corruption unit AC-12 believe it required a police insider to pull off.
The clip shows the return of Vicky McClure as DS Kate Fleming and Adrian Dunbar as Ted Hastings, as well as the introduction of Stephen Graham as a new criminal adversary.
After the hijacking, Graham can be seen removing his balaclava and saying: “Job done, nice work lads.”
There is also a reference to H, the corrupt senior officer that was thought dead at the end of series four.
The last episode, which aired in 2017, concluded with Hastings saying he was satisfied that ACC Hilton was the one colluding with the late Dot Cottan but it appears H may still be at large.
The new series is once again penned by Jed Mercurio, who enjoyed huge success last year with Bodyguard.
The new episodes of Line Of Duty are coming soon to BBC One.