Radcliffe was unique in that she was known for including supernatural elements but eventually giving readers a rational explanation for the supernatural. Usually, Radcliffe would reveal the logical excuse for what first appeared to be supernatural towards the end of her novels, which led to heightened suspense. Some critics/readers found this disappointing and felt duped. "Perhaps the most eloquent complaint against the trope was penned by Walter Scott in his "Lives of the Novelists" (1821–1824). Regarding Radcliffe’s penchant, he writes: “A stealthy step behind the arras may, doubtless, in some situations, and when the nerves are tuned to a certain pitch, have no small influence upon the imagination; but if the conscious listener discovers it to be only the noise made by the cat, the solemnity of the feeling is gone, and the visionary is at once angry with his sense for having been cheated, and with his reason for having acquiesced in the deception." Some modern critics have been frustrated by her work, as she fails to include "real ghosts". This could be motivated by the idea that works in the Romantic period, from the late 18th century to the mid-19th century, had to undermine Enlightenment values such as rationalism and realism.