What is it like to have beliefs and experiences others find unusual? A selection of contributors explore different aspects of these beliefs and experiences in clinical and non-clinical samples. Part one investigates the relationship between experiences reported by mental health users and by the general population. Part two examines the experiences of mental health users using discourse analysis. Part three explores contexts where these experiences have cultural value, including new religious movements, the Spiritualist Church and conspiracy theorists. The book concludes with two detailed commentaries and an appendix discussing the ethical and practical issues involved in these studies.