I was curious as to how the text would tackle the thorny, murky, controversial topic of pediatric-onset bipolar disorder. I was amazed and relieved to discover that the vast and varied literature on this broad topic was organized and distilled into a relatively concise, neutral, and intelligible chapter, by authors Gabrielle A. Carlson, M.D., and Stephanie E. Meyer, Ph.D. The inclusion of case vignettes was critical to demonstrating the nuances and complexities of assessing youths for bipolar spectrum disorders. All controlled medication trials are summarized amply and depict detailed, as well as bulleted, summary tables, which have practical utility in a busy clinical or teaching site. Furthermore, what is known about behavioral, psychosocial, and family treatments is reviewed and presented in a consolidated fashion. I appreciated the ability of Drs. Carlson and Meyer to fairly represent the varied and sometimes contradictory perspectives held by subject matter experts and researchers across the world. In addition, the authors were adept at highlighting the potential pitfalls and confounders in assessing and treating youths suspected of having mood disorders, which will prove useful to all practitioners who might encounter such cases.