There are 3 books in the Wallace and Grace series.
The Wallace and Grace series does not have a new book coming out soon. The latest book, Wallace and Grace and the Lost Puppy (Book 3), was published in September 2017.
The first book in the Wallace and Grace series, Wallace and Grace Take the Case, was published in May 2016.
The Wallace and Grace series primarily falls into the Mystery genre. This chapter book series was written for ages 7-10, but some older readers may still like to read these books.