Shadow Twin Author:Gardner Dozois, George R. R. Martin, Daniel Abraham Shadow Twin is a 120 page novella by Gardner Dozois, George R.R. Martin, and Daniel Abraham. Gardner began the novella in the 1970s, handed it off to George in the 1980s, who, in turn, called upon Daniel Abraham to add the finishing touches. This novella has been expanded into the novel Hunter's Run. — Includes an afterword ... more »by all three authors, illustrated with a full-color dust jacket and black and white full-page illustrations by Michael Kolesch.« less