There are 36 books in the Baby-Sitters Club Mysteries series.
The Baby-Sitters Club Mysteries series does not have a new book coming out soon. The latest book, Kristy and the Cat Burglar (Book 36), was published in August 1998.
The first book in the Baby-Sitters Club Mysteries series, Stacey and the Missing Ring, was published in September 1991.
The Baby-Sitters Club Mysteries series primarily falls into the Mystery genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.