There are 3 books in The Engelsfors Trilogy series.
The Engelsfors Trilogy series does not have a new book coming out soon. The latest book, The Key (Book 3), was published in November 2015.
The first book in The Engelsfors Trilogy series, The Circle, was published in January 2014.
The Engelsfors Trilogy series primarily falls into the Fantasy genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.