This article is about the book written by Emily Rodda. For the fictional object of the same name go to Secrets of Deltora. Secrets of Deltora is a companion book to the Deltora Quest series, written by Emily Rodda. The book is written in a way that make it seem like it was written by Doran the Dragonlover, the same way she wrote The Deltora Book of Monsters and Tales of Deltora to read like works by Josef. The book is a travel guide of Doran the Dragonlover's adventures and his personal journal and diary. The book is filled with illustrations by Marc McBride.