George R. R. Martin and science fiction's top authors delve into the adventurous superhero universe, Wild Cards, in the sixth book of this fan favorite series.Since a strange alien virus created the superhuman beings known as Aces and Jokers four decades ago, they have struggled for respect and recognition. Now they are key players in a presidential convention torn by hatred and dissent. Assassins stalk the halls of the convention and one of the candidates plans to...