There are 2 books in the Diary of a Haunting series.
The Diary of a Haunting series does not have a new book coming out soon. The latest book, Possession (Book 2), was published in September 2016.
The first book in the Diary of a Haunting series, Diary of a Haunting, was published in August 2015.
The Diary of a Haunting series primarily falls into the Speculative Fiction and Suspense genres. This young adult series was written for ages 12-17, but can be enjoyed by adults too.