There are 2 books in the Hawaiian Island Detective Club series.
The Hawaiian Island Detective Club series does not have a new book coming out soon. The latest book, Ukuleles Undercover (Book 2), was published in May 2014.
The first book in the Hawaiian Island Detective Club series, Menehunes Missing, was published in February 2013.
The Hawaiian Island Detective Club 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.