After his bestseller 'The Code of Evil', Raimund H. Drommel presents this scientifically grounded volume on language profiling. The founder of linguistic criminology demonstrates how interdisciplinary methods can be used to decode the language profiles of anonymous authors or to exonerate individuals suspected of being the authors of anonymous or pseudonymous texts. Before providing a nuanced overview of the current state of research, Drommel presents a selection of his earlier articles, each placed in its temporal context. Additionally, he introduces authentic cases, creating a comprehensive and empirical impression of the work of a language profiler. The book is written in an entertaining and thrilling manner. It offers criminologists, lawyers, linguists, and anyone interested in language profiling a wide interdisciplinary spectrum of valuable insights.