A professional audiobook cover image, square format 1024x1024. The artwork should evoke a sense of mystery, gothic romance, and subtle horror. Dominant imagery: a dimly lit, ancient Romanian manor house interior, perhaps a grand staircase shrouded in shadow, with faint moonlight filtering through a tall, ornate window. In the foreground, a ghostly, ethereal female figure, partially transparent, with long dark hair and wearing a flowing, old-fashioned gown. Her expression is enigmatic and alluring, with a hint of melancholy. Hints of faded, luxurious textiles and antique furniture can be seen in the background. The color palette should be dark and moody, featuring deep blues, purples, greys, and muted golds, with a soft, diffused light source. The overall atmosphere should be dreamlike, slightly unsettling, and intensely atmospheric, suggesting a hidden world beyond the ordinary. No text or logos.