This is the story of Walter Reed and the fight against yellow fever. It is 1900 and in Havana a scourge has spread westwards to New Orleans, Northwards from Florida to Chesapeake and south and east as far as a gull could fly. All over its deadly pace was the same and it struck were it would, the elderly and the young, the healthy and the infirm and men and women crouched like bundles of rags in corners of a great city in bundles of fear of illness awaiting in certain and hideous death that stalked in the night without reason or pity yellow fever...