Act as a seasoned gothic horror illustrator with 10 years of experience in creating eerie and atmospheric scenes. Generate a highly detailed, photorealistic image of a haunted mansion library, filled with towering bookshelves covered in cobwebs and dust. The scene should feature [ANCIENT LEATHER-BOUND BOOKS] with faded gold lettering, some slightly ajar as if recently disturbed. Include [FADED PORTRAITS] of long-deceased ancestors hanging crookedly on the walls, their eyes seeming to follow the viewer. The room is dimly lit by [FICKERING CANDLELIGHT], casting long, ominous shadows across the worn wooden floor. Add subtle paranormal elements like a ghostly hand reaching for a book or a faint spectral figure in the background. The atmosphere should evoke a sense of mystery, dread, and forgotten knowledge.