Factual error: There is a scene near the beginning of the movie when the mist has just begun. A firetruck roars by, and has Caddo Parish Fire Dept. on the side. This movie is set in Maine. Louisiana is the only state with parishes. All others, including Maine, have counties.
Continuity mistake: In the opening scene, the wind has blown a tree down toward the house, which is away from the lake. In a following scene the tree has blown down on the boat house, which is toward the lake.