Lisi Harrison is an American author best known for her popular young adult book series, including The Clique. Born on September 26, 1970, in Montreal, Canada, she later moved to the United States, where she pursued a career in writing. Harrison's work often explores themes of friendship, social dynamics, and the challenges of adolescence. In addition to her novels, Harrison has also worked in television, contributing to shows like The Secret Life of the American Teenager. Her engaging storytelling and relatable characters have made her a favorite among young readers, and she continues to write and inspire new generations.