This is an excellent clinical textbook by a group steeped in a quarter of a century's clinical experience and basic research experience. For members of INS who desire a rich and deep resource book on Tourette syndrome (this reviewer was trained to omit the possessive ‘s’ for all eponymous genetic designations) this one from the Yale Child Study Center provides the best choice. The organization of the book is also praiseworthy, as each chapter ends with a “look back” summary and a preview of the next chapter. It has the virtues of harmonious voices, coming as it does from a single center. The medical (including but not limited to neuropsychiatric) and biological sciences are presented in depth, clearly and thoughtfully, and well integrated with the clinical breadth of coverage of the core disorder and Tourette syndrome's (TS) comorbidities. Attention Deficit Hyperactivity Disorder (ADHD), and Obsessive Compulsive Disorder (OCD).