Learmonth and Tabakoff outline the physical and neurological changes that typically affect the victims of disaster. Then, using true stories from history as case studies, they investigate the scenario famously imagined by William Golding in Lord of the Flies and borne out by the extraordinary Robbers Cave experiments of the 1950s. As this fascinating book unfolds the awful truth becomes clear. In extremity, humans are capable of a descent into murderous savagery so swift and complete it could - literally - take your breath away.