Read (or reread) The Baby-sitters Club books. This challenge will include the original 131 books, and the 15 Baby-sitters Club Super Specials ( which take place during the original series but the timing of when exactly has never been fully clear). The Prequel The Summer Before will be a bonus. Spin off series will be different challenges. While all of the books are published with Ann M Martin's name on the cover, the majority of them credit ghostwriters as the authors.