Fiction based on real, recognizable and historic personages can be rather tricky. Is the fiction retelling their stories, and if so, why? How much is real and how much is embellished? Why does the author use these figures instead of inventing her own? And, most importantly, how believable is this fictional account of these very real people? Novelist Dara Horn tackles these issues in her ambitious and well-intentioned second book, THE WORLD TO COME. Horn's challenge is complicated further by her use of the life and work of a particularly enigmatic Yiddish writer, Der Nister ("the Hidden One"), as well as the life and work of Jewish painter Marc Chagall.