Netflix's Black Doves ending explained: Why was Jason killed and who was on Reed's sofa?

Warning - this article contains full spoilers for Black Doves.

Black Doves, the latest gripping thriller from Netflix, has just been released this week and is anticipated to make waves on the streaming platform.

Set during the festive season in London, the captivating mystery begins when professional secret agent Helen Webb (played by Keira Knightley), who is assigned to politician Wallace Webb (Andrew Buchan), starts an affair with Jason Davies (Andrew Koji).

When Jason becomes a victim in a puzzling series of assassinations, Helen's boss Mrs Reed (Sarah Lancashire) dispatches hitman Sam Young (Ben Whishaw) to safeguard her.

However, Helen is determined to unravel the mystery behind Jason's murder, and together they eventually trace the killing back to a powerful crime syndicate known as the Clarks, reports the Mirror.

In the season's final episode, Helen and Sam confront the formidable matriarch of the Clark family, Alex Clark (Tracey Ullman), who denies any knowledge of the assassination.

So, who was responsible for Jason's demise?

During the tense showdown, it is revealed that Alex's son Trent (Angus Cooper) orchestrated the murders of Jason, MI5 informant Maggie (Hannah Khalique-Brown), and tabloid reporter Phillip (Thomas Coombes) to cover up his accidental killing of a Chinese diplomat.

What Trent didn't know was that the death of Kai-Ming's (Isabella Wei) father was captured on camera, as Maggie had planted a bug in the apartment. She was selling secrets to the press and providing the most sensitive information to British intelligence.

Government official Stephen Yarrick (Sam Troughton) was enlisted, implicating the prime minister in a phone call that was secretly recorded.

Trent, burdened with guilt over years