Geraldine Brooks is a prolific writer of historical fiction. In the book The Secret Chord she gives us an imaginative, historically possible, insight into her vision of the stories of King David.Again, this is not scriptural material, so don't take it too seriously! These books are great for fun, summer reading, but they can not replace a reading of the inspired Word of God!
The publisher has this bestseller in stock at http://www.penguinrandomhouse.com/books/310470/the-secret-chord-by-geraldine-brooks/9780670025770/. Or get it at your favorite library or bookstore.