In "Jane Eyre," author Charlotte Bronte foreshadows major plot events and revelation's with her signature immersive imagery. All plot events are seemingly intertwined, with several threads running throughout the book. The most important and pivotal event foreshadowed in Jane Eyre with imagery and dialogue is the surfacing of Mr. Rochester's wife, Bertha Mason, from her "hiding place" (or prison) which is the explanation of several mysterious events at Thornfield, Mr. Rochester's estate. Charlotte Bronte foreshadows the appearance of Bertha Mason with a series of seemingly inexplicable events.
Jane Eyre tells the story of an orphaned girl's life from childhood to middle adulthood. After being sent to a boarding school, Jane finds a job working as a governess at Thornfield for the secretive Mr. Rochester, and coworker servants Grace Pool and Mrs. Fairfax among others. Jane finds working a mostly pleasant experience except for some occasional violent or maniacal experiences. She assumes these events are attributed to a servant named Grace Pool. Yet, all of these strange events are in fact a foreshadowing of the plot twist - Mr. Rochester has an insane wife, Bertha Mason, whom he keeps locked in the attic where she plots against Jane. The first event to go awry at Thornfield relating to Bertha is relatively minor, yet sets the precedent for oddities at the estate and begins the foreshadowing of her character. Jane notices a maniacal laugh coming from the third floor of the estate on her first day at Thornfield: .
While I paced softly on, the last sound I expected to hear in so still a region, a laugh, struck my ear. It was a curious laugh; distinct, formal, mirthless. I stopped: the sound ceased, only for an instant; it began again, louder: for at first, though distinct, it was very low. It passed off in a clamorous peal that seemed to wake an echo in every lonely chamber; though it originated but in one, and I could have pointed out the door whence the accents issued.