Seth Grahame-Smith co-authored with Austen on his 2009 book "Pride and Prejudice and Zombies," in which the characters are fighting off a zombie plague. Grahame-Smith took the text of the original novel and added such startling sentences as Lady Catherine's comment, "No ninjas! How was that possible? Five daughters brought up at home without any ninjas! I never heard of such a thing. Your mother must have been quite a slave to your safety." The zombie idea was continued in a prequel, a sequel, and a planned 2013 film adaptation.
