The Minerva Clark series does not have a new book coming out soon. The latest book, Minerva Clark Gives Up the Ghost (Book 3), was published in September 2007.
The first book in the Minerva Clark series, Minerva Clark Gets a Clue, was published in September 2005.
The Minerva Clark 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.