"Common Devil" is a novel by Boris Grebenshchikov, in which the author reveals complex relationships between people. The main characters are a young couple who find themselves in a relationship crisis due to misunderstanding and jealousy. The author successfully shows the fate of the heroes, asking important questions about love, loyalty and betrayal. After reading this book, readers have the opportunity to gain a deeper understanding of human feelings and sensations. "The Common Devil" is a vivid example of high literature that frightens and fascinates at the same time.