Adam is in denial, unable to grieve for Fiona. Hugo Ross, an old cold-war traitor, is approached by MI5. The son of the now dead Soviet spy who recruited Hugo is in Britain. The son is as passionate about capitalism as the father was about communism and the UK Government is toying with allowing the son to save the NHS by buying it. MI5 are unconvinced by the son and independently set out to discover the son’s true motives.