The book "The Criminal Idiot: An Analysis of Three Incredible Murder Cases" was written by Henry Herbert Goddard, an English psychiatrist and criminal anthropologist. In this work, the author examines three vulnerable cases of murder, where the criminals are presented as "idiots" with a poor understanding of social norms and morality. Goddard analyzes the psychological and social aspects of these crimes, trying to uncover the root causes of each criminal's aggressive behavior. Through the lens of these three cases, Goddard explores the relationship between reason, emotion, and action, inviting the reader to gain a deeper understanding of the nature of criminals and their crimes.