Sam Mendes has signed on to direct the much mooted adaptation of the cult graphic novel, Preacher. The American Beauty and Road to Perdition helmer will start work on this project after completing promotion for his latest Oscar bait Revolution Road, and editing on his untitled comedy with The Office star John Krasinski. The novel is about a preacher who travels across the country to take on a supernatural force when his Texas town is overtaken by satanic wrong sorts. James Marsden has been linked with the role for years, while Daredevil director Mark Steven Johnson was set to produce a HBO series based on it that fell through. No word on casting yet, but let us not forget that Road to Perdition was also a graphic novel brilliantly adapted for the big screen by Mendes, and this should be no different.