"The Clique" is a popular book series written by Lisi Harrison that follows a group of wealthy middle school girls living in Westchester County, New York. The main character, Massie Block, is the leader of the group known as the Clique, which includes her friends Alicia, Dylan, and Kristen. The series explores themes of friendship, social status, and the challenges of growing up. The story often revolves around the girls' interactions at their exclusive private school, Octavian Country Day, and their various social dynamics. Each book delves into the ups and downs of their relationships, showcasing the pressures of fitting in and the impact of peer influence on their lives.