“Mask of Sanity: An Attempt to Clarify Some Issues about the So-Called Psychopathic Personality” is a textbook written by Hervey Cleckley, published in 2015 by Echo Point Books & Media, LLC. The book delves into psychology, specifically exploring the subject area of psychopathy. With 600 pages, it offers in-depth insight into the complexities of psychopathic behavior, making it a valuable resource for those interested in understanding this topic in a scholarly context. This trade paperback is 9 inches in length and 6 inches in width, making it a convenient size for reference and study.