There are 20 books in the Wishbone Mysteries series.
The Wishbone Mysteries series does not have a new book coming out soon. The latest book, The Case of the Breaking Story (Book 20), was published in June 2000.
The first book in the Wishbone Mysteries series, The Treasure of Skeleton Reef, was published in November 1997.
The Wishbone 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.