Percy Bysshe Shelley's 'Zastrozzi' is a gripping and dark tale that is considered one of the early examples of gothic horror literature. The book follows the vengeful protagonist Zastrozzi as he seeks revenge against the man who wronged him, leading to a series of violent and tragic events. Shelley's writing style in 'Zastrozzi' is characterized by its melodramatic and intense language, drawing readers into a world of passion and despair. The novel's exploration of themes such as obsession, power, and morality make it a compelling and thought-provoking read, with elements of the supernatural adding to its eerie atmosphere. Set against the backdrop of the Romantic era, 'Zastrozzi' reflects the gothic literary trends of the time, offering a blend of thrilling drama and philosophical introspection.