Prompt
Create an image of a 19th-century English novel book cover titled "The Dead Secret" by Wilkie Collins, set against a backdrop of the Cornwall landscape, with a mysterious and suspenseful atmosphere, incorporating elements that reflect the sensation novel genre, and featuring a subtle hint of the main characters, Sarah Leeson, Rosamond Treverton, Leonard Frankland, and Andrew Treverton, in a style reminiscent of Victorian-era illustrations.