Biological terrorism is now widely acknowledged to be inevitable. In the former Soviet Union the military has perfected smallpox, anthrax and Plague as biological warheads on intercontinental missiles that can reach London, New York and Los Angeles. In South Africa and Zimbabwe, biological weapons have already been used to kill innocent civilians. To reveal these stories they have secured the co-operation of the American Department of Defence, the United Nations and various civilian and military intelligence agencies. Here is a factual account that reads like fiction; a taut investigation behind the headlines which identifies the real Plague Warriors, those behind the new weapons of horror, and the men and women dedicated to defending us against them.