"Demelza" is a historical novel written by Winston Graham, first published in 1945. It is the second book in the Poldark series, which follows the life of Ross Poldark in 18th-century Cornwall, England. The story focuses on the character of Demelza Carne, a young woman from a poor background who becomes Ross's wife. The novel explores themes of love, class struggle, and personal growth. Set against the backdrop of the Cornish mining industry, "Demelza" delves into the challenges faced by its characters as they navigate societal expectations and personal ambitions. The book highlights the complexities of relationships and the impact of historical events on individual lives, making it a compelling read for fans of historical fiction.