"Satanail" is a philosophical novel by the Ukrainian writer Mykhailo Stelmakh. The book tells about the fate of Satanael, a fallen angel who decided to side with man. Having gone to earth in the form of a man, he overcomes many trials and temptations, looking for a way to salvation. The author, with the help of this allegory, deeply analyzes the nature of good and evil, showing that everyone has the power to change their destiny. "Sataniel" is a book that will leave behind many questions and give the reader new thoughts about eternal principles and the choice between good and evil.