'Persecutory Delusions is an outstanding book that provides a unique update on the assessment, biological and psychological processes, and treatment of this important clinical phenomenon. Freeman, Bentall, and Garety, all seasoned clinicians who have also made valuable contributions to theories of delusions, have assembled world experts on this topic for the first time in this welcomed volume. The state-of-the-art summary of research, theory, and clinical practice related to persecutory delusions make this book a critical resource for anyone seeking to understand or treat psychosis.' Professor Kim T. Mueser, Dartmouth Medical School ' Delusions have long been known to psychiatry - but have largely been considered a subset of 'psychosis'. However, over the last decade a range of scientists, psychologists, phenomenologists, pharmacologists, and imagers have been studying delusions in their own right, and social epidemiologists and geneticists have been looking for their causes in clinical populations and wider society. This book is the first to pull together these different perspectives under one cover. For scientists and practitioners who study and treat psychosis this is a remarkable resource. This will be a "go to" reference book for developing a comprehensive understanding of delusions.' Professor Shitij Kapur, Institute of Psychiatry, King's College London