This document compares the popularity of various bestselling authors of mystery and thriller novels. It groups the authors into categories like thrillers, novels about vampires, and mystery/crime novels. It also analyzes the relative popularity of authors like Stephen King, Dan Brown, Laurell Hamilton, and Wilbur Smith in different countries. Horror/vampire novels seem most popular in Hungary, mystery novels in Poland, and both genres in Italy, which has many fans of those types of stories.