The Forest House is the second book of the Avalon series. Unfortunately The Forest House isn't as good as The Mists of Avalon.
In my opinion The Forest House is readable, but it's not on the same level as The Mists of Avalon. This book was a disappointment. That's why I have to say that if you liked The Mists of Avalon and think that this book is going to be just like it, you'll be disappointed.