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
as Charles Thoroughgood
Romola Garai
as Anna March
Andrew Scott
as Viktor Koslov
Christian McKay
as Hugo March
Simon Russell Beale
as Hookey
Richard McCabe
as Gerry
Olivia Grant
as Eva Pym
Geraldine James
as Martha
Tessa Peake-Jones
as Joyce Thoroughgood
Robert Ashby
as Annikov
Alec Utgoff
as Rhykov
Charlotte Randle
as Emily
