Darabont began filming The Mist in Shreveport, Louisiana in February 2007. The director revised the ending of the film to be darker than the novella's ending, a change to which King was amenable. He also sought unique creature designs to differentiate his from creatures in past films. The Mist was commercially released in the United States and Canada on November 21, 2007; it performed well at the box office and received generally positive reviews.