Marshall received the first draft of the film in late July 2006, with no directors or cast in mind. He made it clear that he intended to incorporate more of the feeling of claustrophobia like that of a particular scene in the previous film. Marshall tells Bloody-Disgusting.com about new ideas for the film, "The monsters they can deal with, and a bit of the claustrophobia, they can deal with, but the combination is definitely something we want to incorporate that into the sequel, by putting the monster and the girls in a really tight spot." Jon Harris, the editor of the first film, was brought on to direct and edit the sequel. It is his only directing credit as of 2019.