The first time Harker is at her house it shows the front door top lock chain locked. Moments later there is a tense moment where she locks the same chain lock.
Despite the movie being set in the 1990s, the theme for "The Price is Right" that can be heard on the TV is the version that has been used since 2007.
Despite the film taking place during January in Oregon, it's still light outside when a clock reading 6:30 PM is visible at Harker's family home. In reality, the sun would have set before 5:00 PM.
When agents Harker and Carter uncover the doll buried beneath the floorboards in the barn, the number of lightning strikes in a row that were shown is unheard of for western Oregon in the winter, and most certainly was added for dramatic effect. While storms are common in western Oregon in the winter, lightning and thunder are not.