The plot starts with the young girl who is the narrator of the novel, which her name remains unknown throughout the entirety of the book. She is a companion to a wealthy lady where she meets in the dining room of a hotel, the rich widower Maxim de Winter a man who is twice her age. He is taking some time off after the apparent suicide of his wife. They fall in love and after a whirlwind romance, they get married.
After their honeymoon they return to Maxim's family estate, Manderley. She is all to soon faced with the burden of living there, the mansion that is haunted by the powerful presence of his first wife, Rebecca. This is where she finds it incapable of understanding her husband's past, especially as she gets no direct answers from him. She finds herself living in Rebecca's shadow and haunted by the mystery of the woman's death. She is and always will be the SECOND Mrs. DeWinter, something the sinister housekeeper, Ms. Danvers, will not let her forget. Through a series of disastrous events, the second Mrs. de Winters learns the truth about Rebecca's death.