TMDb/Big Little Lies Celebrity Big Little Lies sequel novel 'Big Little Truths' is here, setting the stage for a potential HBO season 3. Discover the new story a decade later. March 20, 2026 AceShowbiz - Liane Moriarty, the author behind the best-selling novel Big Little Lies, has officially written a sequel book titled Big Little Truths. This new source material will serve as the foundation for a potential third season of the Emmy-award winning HBO adaptation.