The book "The Orphan; or, The Unhappy Marriage. A Tragedy in Five Acts" by Thomas Otway is a classic work of English literature of the 17th century. The author tells the story of a young woman who becomes an orphan after the death of her father, and finds herself involved in an unsuccessful marriage with a cruel and ruthless duke. This tragedy demonstrates the complexity of human relationships, the importance of choices and the consequences of our actions. Otway skillfully reproduces dramatic events on stage, captivating the reader with his impressive combination of feelings, plot and images. This book is worth the attention of both fans of classical literature and those interested in the psychology of heroes and their moral choices.