The collection of essays is devoted to an unusual type of criminal activity - crimes related to deception of the trust of the injured party. This could be an individual, a commercial organization, or even a government agency. The psychotypes of “trustworthy” criminals are united by a rather curious common feature - these people are pathologically deceitful and deception is an integral element of the crimes they commit. The collection is intended for a wide range of readers interested in the history of criminology and detective work.