The fifth volume of the collected works of Fyodor Sologub includes mysteries, dramas and tragedies, as well as the stories “Young Lady Lisa”, “The Edge of the Sword”, and the book of short stories “The Blind Butterfly”. Most of the works are published these days for the first time.The text of the book was translated from the original language using an artificial intelligence program. For the most part, the translation of the text is of very high quality, but in some cases, due to the imperfection of the technology, there may be incorrect phrase translations in the text, as well as single words and expressions may not be translated.