Big Little Lies, authored by Liane Moriarty, is a captivating urban mystery fiction book set in a seemingly idyllic coastal town. The story revolves around a group of women whose lives intertwine when a murder occurs during a school trivia night. As the investigation unfolds, dark secrets and complex relationships are revealed, challenging the facade of perfection in the community. Moriarty's skillful storytelling and exploration of themes like friendship, motherhood, and domestic violence make this book a compelling read.