The book "Underworld" by the famous English writer George Gissing is a socio-psychological novel that reveals the life of workers in London of the 19th century. The author covers in detail the difficult life of poor people, depicting the feeling of hopelessness, despair and struggle for survival. With the help of pictorial descriptions, the author tries to depict the atmosphere and situation of that time, questioning social inequalities and injustice. "Underworld" impresses readers with its depth and realistic depiction of the life of the poor, revealing the tragic reality of those times. This book leaves behind many thoughts and reflections about society, humanity and justice.