About the book: 2023 / The case takes place in early September 1909 on board the river steamer "Sibir" going upstream. Over the course of one day, a long cold night and an endless foggy morning, an “unexpected accident” will occur here, a series of crimes and a brilliant investigation of these crimes by Prince Alexei Alekseevich Lepekhin, the former director of the police department of the Ministry of Internal Affairs of the Russian Empire, and now a state criminal, following under in a convoy to the place of exile in the city of M. The prince is accompanied on the way by his wife Ekaterina Dmitrievna and his brother Prince Sergei Dmitrievich Rusov.