Emmanuelle Chriqui dislocated her shoulder performing her fall through the trees. You can hear her shoulder pop on the production track in the theatrical sound mix.
Several of the cast and crew were covered in poison ivy throughout the filming of the movie, this was due to the chairs being placed in what was first thought to be a group of weeds only later to be discovered as a patch of the rash causing plants.
The female lead character, Jessie Burlingame, was named after the heroine in Stephen King's novel, "Gerald's Game".
Despite only being credited for his producing, Make-up master Stan Winston was pivotal in the key design of the Mountain Men, in particular now post-modern horror icon Three-Finger. This marks the second last major horror film he has been involved before his death in 2008 at age 62 and the third slasher horror film he had been involved in following uncredited work in Friday The 13th Part II and III, the latter of which he had been a core designer on the original hockey mask of also horror icon Jason Voorhees and the respective mongoloid appearence of Jason for those two parts.