This movie is riddled with them. They say they'll return once they're finished with their errand in town, but they don't come back. I guess the screenwriter just forgot about them. Perhaps haunted houses induce drowsiness. Liam Neeson is supposedly studying their fear, but all he does is tell one spooky story and then dictate a couple of notes into his tape recorder before getting a good night's sleep.
Subjects are scared.
None of this would matter if the film were in any way frightening. And because everything is meant to be animated at some later time, the whole film has a fuzzy quality to it. You don't want especially crisp lines when later on the walls are going to move. I kept feeling like I had to clean my glasses while watching. And when the whole story about why the house is haunted in the first place, it's silly and unnecessary.