Following Sunday night’s penultimate episode, the teaser sees Richard Madden’s character David Budd caught up in swarm of accusations as the evidence against him mounts up.
Budd is accused of being behind the bomb that killed Home Secretary, and his secret lover, Julia Montague (Keeley Hawes) in episode three.
Tense: The BBC have released a first look at the series finale of their hit drama Bodyguard which will air on Sunday
Head of the Metropolitan Police’s Counter Terrorism Command Anne Sampson (played by Gina McKee) is heard opening the episode six teaser with the words: ‘A woman was murdered, a crime was committed.’
A flashback of Julia before her death flashes up on screen before her replacement Mike Travis (Vincent Franklin) is seen meeting with MI5 head Stephen Hunter-Dunn (Stuart Bowman).
Mike declares: ‘Look no further for Julia’s assassin’ as a bloodied Budd appeared on screen.
DS Louise Rayburn (Nina Toussaint-White), an ally of Budd’s in the investigation, forlornly telling her colleague Deepak (Ash Tandon) that it has been ‘an inside man all along’.
Next, sirens whirl as Budd is seen in a dramatic stand-off with armed police. His boss CG Lorraine Craddock (Pippa Haywood) pleads with him to surrender, over walkie talkie: ‘Give yourself up,’ she tells him.
A bloodied Bud replies ‘It’s over,’ while his estranged wife Vicky (Sophie Rundle) looks shocked and is held back by police.
The trailer ends with a clip of David loading a gun.
The penultimate episode of the Bodyguard left viewers reeling for more after some of the series’ biggest questions began to be answered.
In Sunday night’s episode of the BBC One drama, the aftermath unravelled of Home Secretary Julia Montague’s shock death as police pieced together clues of the puzzle of the BBC drama.
It uncovered that Julia was having secret meetings with the Secret Service about the Prime Minister’s sordid past; revealing he’d been accused of sexual assault, battled drug addiction and had committed financial misconduct at an old firm.
Police discovered the bomb that killed Julia had not been in the suitcase after all but planted underneath the stage and a whole hour of CCTV footage of before the attack had mysteriously gone missing.
Budd realised he and his family were being closely watched by the Secret Service, and the episode ended with him being placed on indefinite leave and his weapons confiscated – leaving him vulnerable to whoever was behind the bomb.
The BBC One series has achieved consolidated viewing figures of 10.4 million for its first episode.
This is the highest launch figure for any new drama across all UK channels since 2006, the corporation said.
The series kicked off on August 26, when it scored the highest overnight audience for a drama launch this year by more than one million viewers.
The latest episode added another million viewers in comparison to the week previously, scoring a total of eight million.
Bodyguard concludes on BBC One on Sunday at 9pm.