The Mysteries of Udolpho is a quintessential Gothic romance, replete with incidents of physical and psychological terror; remote, crumbling castles; seemingly supernatural events; a brooding, scheming villain; and a persecuted heroine.
He felt the tender enthusiasm stealing upon himself in a degree that became almost painful; his features assumed a serious air, and he could not forbear secretly sighing—'Perhaps I shall some time look back to these moments, as to the summit of my happiness, with hopeless regret. But let me not misuse them by useless anticipation; let me hope I shall not live to mourn the loss of those who are dearer to me than life.'
The little vanity it had excited (for the incertitude which forbade her to presume upon having inspired the sonnet, forbade her also to disbelieve it) passed away, and the incident was dismissed from her thoughts amid her books, her studies, and the exercise of social charities.
In scenes like these she would often linger along, wrapt in a melancholy charm, till the last gleam of day faded from the west; till the lonely sound of a sheep-bell, or the distant bark of a watch-dog, were all that broke on the stillness of the evening. Then, the gloom of the woods; the trembling of their leaves, at intervals, in the breeze; the bat, flitting on the twilight; the cottage-lights, now seen, and now lost—were circumstances that awakened her mind into effort, and led to enthusiasm and poetry.