"Without Conscience" is a book by Dr. Robert D. Hare that explores the characteristics and behaviors of individuals with psychopathy. Dr. Hare, a clinical psychologist, outlines the traits that define psychopathy, such as a lack of empathy, guilt, and remorse, as well as manipulative and deceitful behavior. The book aims to educate readers about the dangers posed by such individuals in society. The work also discusses the implications of psychopathy in various contexts, including crime and relationships. Dr. Hare emphasizes the importance of recognizing these traits to protect oneself from potential harm. The book serves as a resource for understanding the complexities of psychopathy and its impact on human behavior.