The Dark Knight Rises PR machine just keeps on rolling. In addition to the latest series of TV spots you've probably been seeing on a regular basis over the past week, Warner Bros. and director Christopher Nolan continue to reveal bits and pieces of background information across the web. This time, you can read a series of emails about John Daggett between reporters and editors at The Gotham Observer as well as read up on Joseph Gordon-Levitt's police officer character John Blake thanks to the Mountain Dew tie-in site DEWGothamCity.com.

Opening July 20, The Dark Knight Rises also stars Christian Bale as Batman/Bruce Wayne, Anne Hathaway as Selina Kyle/Catwoman, Tom Hardy as Bane, Marion Cotillard as Miranda Tale, Michael Caine as Alfred and Morgan Freeman as Lucius Fox.

[via ComicBookMovie]