The book "Saeed Hanaei" offers a comprehensive analysis of the life and actions of one of Iran's most notorious serial killers. Saeed Hanaei, who was executed in 2002, is known for his brutal crimes against female prostitutes in Mashhad. The authors shed light on the background of his actions, the societal reactions, and the media coverage that labeled him as the "Spider Killer." By utilizing articles from Wikipedia and other free sources, a multifaceted picture of Hanaei and the circumstances surrounding his arrest and conviction is painted. The book is significant not only for those interested in criminal psychology and social sciences but also provides insight into the societal issues and moral dilemmas associated with his actions.