The Baby-Sitters Club: Kristy's Great Idea | Novel: Ann M. Martin / Scholastic | Graphic Novel: Raina Telgemeier / Graphix Kristy Thomas has a great idea -- she and her friends can work together to give beleaguered a one-stop-shop for baby sitters. That's how the Baby-Sitters Club is formed, with Mary-Anne, Claudia, and the new