Steve Nicolson

Allison suggests that Israel was behind the downing of Youssef's plane. Carrie calls Jonas for assistance with Quinn and Carrie determines that Russian foreign intelligence is after her. Quinn slips away from the safe house.

With their attempt on the Home Secretary's life foiled, the coup plotters try to up the stakes in their battle with MI5. A car bomb planted by the conspirators leaves Juliet paralysed, while Harry is captured and held at a detention centre to await execution. Will the team be able to stop the Prime Minister from announcing the introduction of a dictatorship?

Drama about the British Security Service returns. A terror attack on a gas and oil depot has led to energy rationing and people dying of cold. Amid rumours of further terror threats, the team discovers that intelligence about the attack was ignored by MI6. It soon becomes clear that, far from being a foreign threat, a team of insiders are attempting to take control of the government through a number of terror attacks.