Mashup (book)
As previously noted, the novel "Pride and Prejudice and Zombies" combines Jane Austen's classic 1813 novel "Pride and Prejudice" with elements of modern zombie fiction, crediting Austen as co-author. It was first published in April 2009 by Quirk Books and in October 2009 a Deluxe Edition was released, containing full-color images and additional zombie scenes.
Epistolary novel
The epistolary novel slowly fell out of use in the late 18th century. Although Jane Austen tried her hand at the epistolary in juvenile writings and her novella "Lady Susan" (1794), she abandoned this structure for her later work. It is thought that her lost novel "First Impressions", which was redrafted to become "Pride and Prejudice", may have been epistolary: "Pride and Prejudice" contains an unusual number of letters quoted in full and some play a critical role in the plot.