There are 2 books in the Susanna Horenbout series.
The Susanna Horenbout series does not have a new book coming out soon. The latest book, Keeper of the King's Secrets (Book 2), was published in April 2012.
The first book in the Susanna Horenbout series, In a Treacherous Court, was published in August 2011.
The Susanna Horenbout series primarily falls into the Historical genre.