From the author of "The Men Who Stare At Goats", this is an exploration of the world of madness. Meeting Broadmoor inmates who swear they're sane, psychologists who designed the industry standard Psychopath Test, CEOs, politicians and those ordinary people whose lives have been touched by madness, Ronson combines his trademark humour, charm and investigative incision to unearth dangerous truths and ask serious questions about how we define normality in a world that often celebrates madness.