Psychedelics have made a comeback, but the truth is they remain a mystery. In this daring, profound and wildly entertaining investigation, clinical neuropsychologist Andy Mitchell tests the claims being made for these substances by taking ten different psychedelics in ten different settings. Journeying from a neuroimaging lab in London to the Colombian Amazon via Silicon Valley and his friend's basement kitchen, his encounters with scientists and gangsters, venture capitalists and con men, psychonauts and shamans, and above all with the drugs themselves, take us beyond the hype and reveal the reality of psychedelics - that they are as enchanting but ultimately unfathomable as experience itself.