 This book covers the geography, creation myths, and the gods of Krynn, including articles on each of the heroes which detail how they originally met and background information for each.The book also includes an errata sheet for modules DL1 through DL4.DL5 "Dragons of Mystery" was written by Michael Dobson, with art by Larry Elmore, and was published by TSR in 1984 as a 32-page booklet with an outer folder.