Spooks

At Ros's funeral, Section D are left asking themselves how much a person must sacrifice to be a spy. Harry is determined to exact revenge on ex-ally and former Home Secretary, Nicholas Blake, and even reconsider his own commitment to the service.

Beth's thrown in at the deep end on her first op with Section D when she goes undercover as an oil trader at a secret meeting of Britain's top oil dealers. The Team have received intel that an assassination attempt will be made on influential oil baron Robert Westhouse, and Beth's objective is to protect him.

When Russia accuses the Azakstan Freedom Front of murdering ethnic Russians and invades the ex-Soviet State in a move reminiscent of historical oppression, Towers bans members of the AFF from Britain's shores.

A highly skilled trio of Chinese officers arrive in London, they're here for 48 hours and Section D must discover what it is they've come for and why? Beth has been grooming an asset, Kai, from inside the Chinese Security Services and, determined to prove herself useful to the op, she activates him to help find out the snatch team's aims. But is he ready?

The President is on his way to London to chair top secret peace talks between Israel and Palestine, under the guise of his first state visit. Hopes are high for an agreement: he's the toughest President in years and the Home Secretary tasks Section D with keeping the talks on track.

MI5 are thrown into a cyberterrorism nightmare when an American Predator drone on loan to the UK in Afghanistan is hacked by the Taliban and turned on a US army camp, killing American soldiers.

Ruth is approached out of the blue by an odd figure from the council, Keith Deery. Deery is an official council snooper, but is determined that he has found a dead drop 'message' under a park bench in the shape of a letter containing the words 'Jet' and 'Archon'.

The Team face their toughest challenge ever: tracking down Lucas North, their Section Chief, friend and one of the best agents MI5 has ever seen. But it's not going to be easy to find a man who has nothing left to lose and Lucas is all-too-familiar with how to use London's labyrinth: he just keeps slipping through their fingers.