A KGB plot to attack the UK has plunged Britain into a state of emergency. Charles, a young MI6 spy, is asked to revive an old friendship with Russian diplomat Viktor. But Viktor has his own agenda.
Charlie Cox
Charles Thoroughgood
Romola Garai
Anna March
Andrew Scott
Viktor Koslov
Christian McKay
Hugo March
Simon Russell Beale
Hookey
Richard McCabe
Gerry
Olivia Grant
Eva Pym
Geraldine James
Martha
