Illicit use of narcotic drugs and psychotropic substances harms health, and their illegal distribution is prohibited and entails legal responsibility. The «Left Path» boutique is part of TRANSHUMANISM INC., where detective Marcus Sorgenfeyr works—his mind is stored in a bank. The boutique offers elite clients black-magic virtual journeys. These services are not advertised due to reputational risk— not every politician or banker wants to admit that they’ve been communicating with demonic entities in virtual reality. The disappearances of clients require a hidden investigation. The corporation sends Marcus to a dangerous alchemical simulation, in which he becomes a 16th-century Italian magician, gains magical abilities through a grimoire, and battles powerful Venetian sorcerers. Marcus soon realizes he risks not only his life, but also his soul—yet he continues the investigation under the guidance of Admiral-Bishop Lomas. Questions about the nature of the soul, religion of the future, and whether artificial intelligence can create it, as well as the difference between simulated salvation and real salvation, make him think. Marcus plunges again into dangerous depths, risking everything for a thrilling literary answer to these questions for readers. Knowledge of the previous books in the «Transhumanism Inc.» series is not required to understand the plot. The books are published in the following order: 1. TRANSHUMANISM INC. 2. KGBT+ 3. «A Journey to Eleusis» 4. «Krut’» 5. A Sinistra («Left Path»).