Foreshadowing: The practice of hinting about action or revelations to come.
Foreshadowing is used to create anticipation and suspense. The idea is that whether or not something exciting is happening at the moment we foreshadow, there are exciting things to come.
Had I but known then what I do now, I might never have married a man I didn’t really know, and settled down to domestic life with him in that fog-bound house of stone….
So many gothic romances from the late 18th and early 19th centuries began with similar words that they became known as the “Had I But Known” school of writing, shortened to HIBK. And of course, modern bodice-rippers (one of my favorite euphemisms for a sub-genre of period romance novels) are not immune ...