Comment Are they going to read every book to find them? (Score 1) 764
Take, for example, Piers Anthony's Bio of a Space Tyrant series...brother and sister sleep together and their relationship is an important theme throughout the book. However, the basic plot is not about incest, it's about the rise of a diplomat in a Space Opera.
So, is it just books that are "about incest" or those that have that element within them? Where's the dividing line?