In a non-fiction narrative that reads like a medical thriller, Richard Rhodes follows virus hunters on three continents as they track the emergence of a deadly new brain disease that first kills cannibals in New Guinea, then cattle and young people in Britain and France -- and that has already been traced to food animals in the United States. A new Afterword assesses what needs to be done to prevent a fatal epidemic. "An Upton Sinclair-ish look inside the modern meat industry....Rhodes tells this medical detective story beautifully". -- John Schwartz, The Washington Post