"Difficult" people frequent every kind of library. Whether a tough customer's behavior is a symptom of mental or emotional disorder, or the result of a bad day and a convenient target, all library staff benefit from knowing how to deal with one. This best-selling manual guides library staff at all levels through different types of behavior and clients (e.g., angry, hostile, aggressive, passive-aggressive, lonely, homeless, etc.), different responses, and appropriate resources for help.