The cover could feature a dark and imposing mansion on top of a hill, envolta em neblina e cercada por uma floresta densa. In front of the mansion, a mysterious figure standing, looking at the horizon with an enigmatic expression. Around the mansion, sombras se estendem, sugerindo os perigos e segredos que aguardam dentro. The title of the book, "Captive in the Shadows", poderia estar em letras ousadas e sombrias, adding to the atmosphere of mystery and suspense. Don't forget the title of the book

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