This chapter provides a summary of a landmark study on short and longterm treatment of insomnia. Should older patients with insomnia be managed with cognitive behavioral therapy, benzodiazepines, or both? Starting with that question, it describes the basics of the study, including funding, study location, who was studied, how many patients, study design, study intervention, follow-up, endpoints, results, and criticism and limitations. The chapter briefly reviews other relevant studies and information, discusses implications, and concludes with a relevant clinical case. The study shows that bensodiazepines and cognitive behavioral therapy are equally effective for shorterm treatment of insomnia in otherwise healthy elderly participants but cognitive behavioral therapy is far more effective for longterm treatment of insomnia.