Song of ice and fire prequel stories

"All new and original to this volume, the 21 stories in Dangerous Women include work by twelve New York Times bestsellers, and seven stories set in the authors' bestselling continuities--including a new "Outlander" story by Diana Gabaldon, a tale of Harry Dresden's world by Jim Butcher, a story from Lev Grossman set in the world of The Magicians, and a 35,000-word novella by George R. R. Martin about the Dance of the Dragons, the vast civil war that...