Prince Felix Yusupov was one of those who organized the attempt on Rasputin. In his memoirs (the book was published in Paris in 1927), which for a long time could only be read by a limited circle of specialists, he reveals the circumstances of the murder. There is a certain bias in the author's opinion, which is explained by his views, sympathies and antipathies, and the book itself is a kind of document of time that helps us understand and connect together many facts of bygone times.