There are 3 books in The Shadowside Trilogy series.
The Shadowside Trilogy series does not have a new book coming out soon. The latest book, Beyond Corista (Book 3), was published in May 2009.
The first book in The Shadowside Trilogy series, Trion Rising, was published in May 2008.
The Shadowside Trilogy series primarily falls into the Christian genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.