The assessment and treatment of sexual deviance can be very difficult tasks, and it can be hard to find mentors to provide initial skills training and help in navigating the many complexities of a particular case. This book presents a series of case studies from international experts in the field that depict the evidence-based assessment and treatment of a variety of paraphilias. Intended as learning tools readers can use as models and from which they can gain insight, these case studies are offered as exemplars of clinical problem solving. The authors of each chapter provide research evidence that justifies treatment decisions, explain their assessment strategies and case formulations, and provide information about how to navigate common problems a clinician will encounter, such as denial, poor motivation, and co-morbid problems. A variety of assessment instruments and treatment strategies are also illustrated. Both new and experienced clinicians will find this book to be an invaluable resource in their own work.