This book fills a great void existing, until now, in the description and understanding of the history of modern psychology. It sheds light on one of the most unknown and least assumed aspects of the historical development of humanistic-transpersonally oriented psychotherapy, by exposing, in a systematic and adequately documented way, the details of the development of therapeutic processes, the personal stories of the pioneers of the Human Potential Movement and the, in many ways, profound impact that Osho (also known as Bhagwan Shree Rajneesh) had on hundreds of psychologists, psychiatrists, and therapists between the 1970s and 1990s. Numerous of the most prominent figures of the humanistic-transpersonal movement were in direct contact or were indirectly influenced by the teachings of this controversial and unorthodox contemporary spiritual teacher. This book intertwines, in an entertaining way, precise historical information and anecdotes experienced and related by the protagonists of this time.