"The Baby-Sitters Club" is a popular book series created by Ann M. Martin that follows a group of young girls who start a babysitting business. The main characters include Kristy Thomas, Mary Anne Spier, Claudia Kishi, and Stacey McGill, each with their own unique personality and background. The series explores their friendships, challenges, and adventures as they manage their babysitting jobs and navigate the ups and downs of adolescence. The first book was published in 1986, and the series has since expanded to include over 200 titles, graphic novels, and a television adaptation. The stories emphasize themes of friendship, responsibility, and teamwork, making it relatable for young readers. The Baby-Sitters Club has become a beloved classic, inspiring generations of children and encouraging them to engage with reading.