An original and thrilling investigation into psychedelics and the claims that currently surround them, achieving profound insights into their essential qualities -- Mike Jay, author of Psychonauts

Utterly compelling. Some books are in a category of their own and this is one them. Reading it is like having an out of body experience -- Mark Miodownik, author of Stuff Matters

A hair-raising hurtle of a ride into the belly of the psychedelic renaissance, fuelled by spectacular prose -- Henry Shukman, author of One Blade of Grass

Beguiling, captivating, mind-expanding. It's impossible to read this book and not be tempted to replicate some of its wild, sanity-stretching forays into the peculiarities of human perception -- Stuart Ritchie, author of Science Fictions

A dazzling, timely book, as deep and poignant as it is madcap and hilarious -- Professor Mark Lythgoe, Director of the Centre for Advanced Biomedical Imaging, University College London

Andy Mitchell is a neuropsychologist and therapist. He has specialized in treating patients with rare brain conditions, head injuries and epilepsy, and in the application of mindfulness for neurological patients. As a therapist he has worked with people with a range of mental health disorders. Before entering medicine, his first degree was in English Literature at Oxford University. He is originally from Leeds.