"El intruso" is a novel by the famous Spanish writer Vicente Blasco Ibáñez. In this book, the author reveals the complex relationships between different social strata of modern society. The main character is an introverted idealist who broke into the world of money and corruption, trying to realize his dreams. The author reproduces the realities and problems of our time, giving the reader the opportunity to deepen his understanding of human nature and social processes. "El intruso" is a piece that fascinates with its depth and realistic depiction of reality.