The Within Trilogy consists of Search for the Sage and its sequel Tunnel at World's End (fantasy stories written for children of about five to eight years old), and the adult or young-adult continuation The Key.
There are lots of ways to get hold of these books or find out more about them. The pages that follow tell you something about the history of each book, showcase their covers and example illustrations, and also provide links to synopses and sample chapters. Hard copies and download versions of each book are available at Kindle versions are available at both and The Kindle versions were organised by Robin Khan, and he has put up links and sample pages on his own site.