Avery, J. D., & Barnhill, J. W. (2018). Co-occurring mental illness and substance use disorders: A guide to diagnosis and treatment. American Psychiatric Association Publishing.To help clinicians keep the big picture in mind, the book is organized around 18 cases, each of which addresses a particular diagnostic skill (e.g., assessment), group of disorders commonly comorbid with substance use disorders (e.g., PTSD, eating disorders), specific treatment (e.g., pharmacological interventions), or special population (e.g., adolescents). This case-based approach makes it easy for readers to understand strategies and master transferable techniques when dealing with their own patients.