There are 2 books in the Isobel Soto Investigation series.
The Isobel Soto Investigation series does not have a new book coming out soon. The latest book, The Mesa Verde Cliff Dwellers (Book 2), was published in March 2012.
The first book in the Isobel Soto Investigation series, Getting to the Bottom of Global Warming, was published in October 2011.
The Isobel Soto Investigation series primarily falls into the General Fiction genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.