Will Storr was in the tropical north of Australia, excavating fossils with a celebrity creationist, when he asked himself a simple question. Why don't facts work? Why, that is, did the obviously intelligent man beside him sincerely believe in Adam and Eve, the Garden of Eden and a six-thousand-year-old Earth, in spite of the evidence against them? It was the start of a journey that would lead Storr all over the world - from Texas to Warsaw to the Outer Hebrides - meeting an extraordinary cast of modern heretics whom he tries his best to understand.Why do obviously intelligent people believe things in spite of the evidence against them? Will Storr has travelled across the world to meet an extraordinary cast of modern heretics in order to answer this question. He goes on a tour of Holocaust sites with David Irving and a band of neo-Nazis, experiences his own murder during 'past-life regression' hypnosis, takes part in a mass homeopathic overdose, and investigates a new disease affecting tens of thousands of people - a disease that doesn't actually exist. Using a unique mix of personal memoir, investigative journalism and the latest research from neuroscience and experimental psychology, Storr reveals why the facts just won't convince some people, and how the neurological 'hero-maker' inside all of us can so easily lead to self-deception and science-denial. The Heretics will change the way you think about thinking.