There are 3 books in the Starlight Detective Agency series.
The Starlight Detective Agency series does not have a new book coming out soon. The latest book, Evil in the 1st House (Book 3), was published in April 2014.
The first book in the Starlight Detective Agency series, Murder in the 11th House, was published in September 2011.
The Starlight Detective Agency series primarily falls into the Mystery genre.