The Ghost Map: The Story of London's Most Terrifying Epidemic - and How It Changed Science, Cities, and the Modern World is by Steven Johnson. This is the story of the massive cholera outbreak in Soho in the summer of 1854. The outbreak killed hundreds of people and almost wiped out an entire neighborhood. It is also the story of a doctor and a minister who set out to determine its cause, and by doing so changed science forever. The book is a bit gross, but so were the conditions in London at this time; it is, however, worth the read for the triumph of human spirit and science over superstition.
Ratings: 9th grade - 8 out of 10 - AC ( mature thematic content).