Breaking cover / Stella Rimington.

Back in London after a gruelling operation in Paris, Liz Carlyle has been posted to MI5's counter-espionage desk. British relations with Russia are tense in the wake of Putin's incursions into the Ukraine. Discovering that an elusive Russian spy has entered the UK, Liz needs to track him down before he completes his fatal mission - and plunges Britain back into the Cold War. Meanwhile, following the revelations of Edward Snowden, the intelligence services are in the spotlight. MI6 hires Jasminder Kapoor, a controversial civil rights lawyer, to explain the issues around privacy and security to the public. But in this new world of shadowy motives, Jasminder must careful about whom she trusts...