A future fourth book has been mooted by the author.
Several future books are works of authors found through this policy.
He was making some notes, doubtless for a future book.
But he has his mother's eyes, and that's very important in a future book".
It includes excerpts from the future books of the saga.
New lines are established that I hope will be part of future books.
I'll go over this ground once more in a future book called "Wagnerism."
He also started gathering materials for his future book on the camp.
And speaking of that, do let me know if you are planning a future book.
One wishes he would tell it in a future book.