Danger Boy, is a young adult time travel series of books written by Mark London Williams, and is about the adventures of twelve-year-old Eli Sands and his companions: Clyne, a dinosaur from another planet, and Thea, last librarian in Alexandria.
Four books have so far been published. A fifth and presumably final book, "Fortune's Fool," has been finished, but due to publishing business changes, has yet to be released.[1]
The first Danger Boy adventure Ancient Fire was nominated for The Golden Duck Awards for Excellence in Children's Science Fiction: Hal Clement Award for Young Adults. When Candlewick Press repressed the first two Danger Boy novels in 2004: Ancient Fire and Dragon Sword, they commissioned Michael Koelsch to illustrate new cover artworks.[2][3] Williams liked Koelsch's illustrations so much that he asked him to do the cover artworks for his next two Danger Boy novels: 2005's Trail of Bones and 2007's City of Ruins.[4][5]