There are 2 books in The Adventures of Patty & Annabel series.
The Adventures of Patty & Annabel series does not have a new book coming out soon. The latest book, Apache Lake and the Chakras (Book 2), was published in March 2009.
The first book in The Adventures of Patty & Annabel series, The Monsoon and the Auric Field, was published in January 2009.
The Adventures of Patty & Annabel 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.