Definition of Foreshadowing
On the way to Northanger Abbey, Henry tells Catherine a hypothetical tale about her first night in Bath. In Volume 2, Chapter 5, he spins a ridiculous tale that much resembles the story of Udolpho:
[...] you will proceed into this small vaulted room[...]. In one perhaps there may be a dagger, in another a few drops of blood, and in a third the remains of some instrument of torture; but there being nothing in all this out of the common way, and your lamp being nearly exhausted, you will return towards your own apartment[...], your eyes will be attracted towards a large, old-fashioned cabinet of ebony and gold[...]. Impelled by an irresistible presentiment, you will eagerly advance to it, unlock its folding doors, and search into every drawer[...].