Part Two alternates between the points of view of Antoinette and her husband during their honeymoon excursion to her mother's summer estate Granbois, Dominica. Antoinette visits her mother once more when she is older but is alarmed at the abuse she witnesses by the servants to her mother and goes away without speaking to her. When Antoinette visits her after the fire, Annette refuses to see or speak to her. Mason sends her to live with a couple who torment her until she dies. As Annette had been struggling with her mental health up until this point, the grief of losing her son weakens her sanity. Angry at the returning prosperity of the planter class, emancipated slaves living in Coulibri burn down Annette's house, killing Antoinette's mentally disabled younger brother, Pierre. Mason, who is hoping to exploit his new wife's situation.

Antoinette's widowed Martinique mother, Annette, must remarry to wealthy English gentleman Mr. Formerly wealthy, since the abolition of slavery, the estate has become derelict and her family has been plunged into poverty. Part One takes place in Coulibri, a sugar plantation in Jamaica, and is narrated by Antoinette as a child. The protagonist Antoinette relates the story of her life from childhood to her arranged marriage to an English gentleman, Mr. The novel, initially set in Jamaica, opens a short while after the Slavery Abolition Act 1833 abolished slavery in the British Empire on 1 August 1834. In 2022, it was included on the ' Big Jubilee Read' list of 70 books by Commonwealth authors, selected to celebrate the Platinum Jubilee of Elizabeth II. She had published other novels between these works, but Wide Sargasso Sea caused a revival of interest in Rhys and her work and was her most commercially successful novel.

Rhys lived in obscurity after her previous work, Good Morning, Midnight, was published in 1939. Wide Sargasso Sea explores the power of relationships between men and women and discusses the themes of race, Caribbean history, and assimilation. Antoinette is caught in a patriarchal society in which she fully belongs neither to Europe nor to Jamaica. Rochester, who renames her Bertha, declares her mad, takes her to England, and isolates her from the rest of the world in his mansion. Antoinette's story is told from the time of her youth in Jamaica, to her unhappy marriage to an English gentleman, Mr. Antoinette Cosway is Rhys's version of Brontë's ' madwoman in the attic'.

Rochester's marriage from the point-of-view of his wife Antoinette Cosway, a Creole heiress. The novel serves as a postcolonial and feminist prequel to Charlotte Brontë's novel Jane Eyre (1847), describing the background to Mr. Wide Sargasso Sea is a 1966 novel by Dominican-British author Jean Rhys.

Wide sargasso sea kindle