The Ghost Map by Steven Johnson (Author)

Steven Johnson is one of today's most exciting writers about popular culture, urban living and new technology. In The Ghost Map he tells the story of the terrifying cholera epidemic that engulfed London in 1854, and the two unlikely heroes - anesthetist Doctor John Snow and affable clergyman Reverend Henry Whitehead - who defeated the disease through a combination of local knowledge, scientific research and map-making.