As the tropical wildernesses of the world are destroyed, and nature's balance is thereby upset, previously unknown viruses are ready to emerge from the wreckage and enter human populations. In 1967 in Germany, a healthy monkey-keeper died a remarkably swift and gruesome death which mystified the medical profession. Outbreaks of a similarly ruthless disease occurred in tropical Africa during the 1970s, wiping out whole villages. Scientists were later able to identify the causes: lethal, highly infectious hot viruses from the tropical rain forest. This is an account of events which took place in 1989, when one such dangerous virus crossed continents and broke out inside a house of imported monkeys, a mere stone's throw from the White House. It describes the drama that later unfolded among the team of American laboratory workers and scientists who discovered the virus in the monkey-house, and struggled to contain it.