Having survived the bombing of the Thames Barrier, Adam and Ros recover to find London facing an even greater threat.
While attempting to thwart an attack that could jeopardise a historic peace accord between Britain and Iran, the team unwittingly unleash a deadly killer. But with a virus that mimics the pneumonic plague, there can be no negotiation.
And when Zaf is kidnapped by armed mercenaries, the team realise that, in a game of the highest stakes, they hold none of the cards. As the stuff of nightmares becomes increasingly real, London faces total devastation.
Over the course of Series 6, the Section D team must also deal with a rogue CIA agent motivated only by greed, the discovery of illegal US spy-planes in the UK and the machinations of a shadowy organisation which seems intent on making Iran nuclear.
Wednesdays from 8th July at 20:30 CAT
