From both academic and clinical perspectives, this book is a valuable resource for anyone interested in the study and treatment of obsessive-compulsive disorder. Information contained within the book is based on current scientific research but includes also clinical observations. One of the greatest strengths of the text is that is is written not only by academics, but also by clinicans emmersed both in the theory and treatment of OCD. The list of contributors is impressive including the most prolific and well-known researchers in the field today. The book deals effectively with current controversies in the area and evaluates theory and practice on the basis of research evidence. While not recommended as a general text, it provides a consolidated, well-researched, accurate and invaluable review of the current state of affaires with respect to theory and treatment of OCD. A must for any student or researcher interested in the study of OCD, and a significant text for clinicans working with OCD sufferers.