A new biography on Daphne du Maurier—best known for her novel *Rebecca*—draws on claims about her private life, including descriptions of her relationships and psychological complexity. The account is authored by du Maurier’s grandson and discusses du Maurier’s life beyond her public career, including references to “twin” personalities.

Across the outlet’s coverage, the biography also alleges that du Maurier had affairs with both men and women and revisits the nature of her relationship with her father, which it characterizes as profoundly troubling. The reporting presents these points as “untold details,” but it does not provide extensive corroborating evidence or direct excerpts within the summarized material provided here.

Overall, the sources align on the basic thrust of the book: it offers a fuller portrait of du Maurier’s personal conduct, identity, and family dynamics, framing these topics as newly revealed through the author’s access or research. Differences in emphasis beyond that alignment are not evident in the excerpts supplied.