By order of the Church of the Holy Seraphim, four of its gifted students, gems, enter service in the imperial investigation. They will have to investigate crimes of special importance - those behind which the Mysterics and other heretics stand. But the first case turns out to be not as simple as everyone around them says, and behind it stretches a thread that leads to a tangle of intrigues and secrets of this world. The first part of a fascinating trilogy from Anna and Mark Cohen, the authors who created the dark psychological thriller “Nettle Pie” and ash." "Gems. Detective Management" is an original fantasy detective story with colorful characters and the author's world order. The events of the story unfold in the alternative Russian Empire of the 18th century. Each chapter-case has a unique stained glass window, which plays an important role in solving the mysteries: take part in the investigation of the main characters! Cover from the artist Polina Graf. Map on endpapers and interior design by Invi.