A three-part thriller by John Dryden. In Part 1, 'The Present', Dr Jan Roldano, microbiologist and WHO advisor on infectious diseases, arrives in Bangkok to give a keynote lecture at a medical conference. But when a virulent strain of bird flu emerges, he finds himself trapped in Thailand. In Part 2, 'The Future', it is five years after a global pandemic that has wiped out half the world's population. British civil servant Diane Harper is sent to Oxfordshire to investigate the suicide of a government scientist, a job that leads to a desperate search for the truth about the origins of the outbreak. In Part 3, 'The Past', eco-warrior Richard Frankel wants to give up direct action. But then he learns something that leads him into a dangerous world of environmental espionage and a conspiracy that will have a terrible, cruel and profound impact on the world.