The Ranger by Ace Atkins (Penguin Group USA - G.P. Putnam's Sons)Included in the Best Paperback Original category are Lucretia Grindle's The Faces of Angels (published in the UK in 2006), Death of the Mantis by Michael Stanley (which will be reviewed soon and is currently the competition prize (no geographical restrictions)), as well as Frank Tallis's Vienna Twilight (UK: Deadly Communion).
Gone by Mo Hayder (Grove/Atlantic - Atlantic Monthly Press)
The Devotion of Suspect X by Keigo Higashino (Minotaur Books) tr. translated by Alexander O Smith & Elye J Alexander
1222 by Anne Holt (Simon & Schuster - Scribner) tr. Marlaine Delargy
Field Gray by Philip Kerr (Penguin Group USA - G.P. Putnam's Sons - Marion Wood Books)
The whole list of nominees and categories is listed on the The Edgars website.