Last winter I saw commercials for a movie, I think it was listed as a
thriller more than a horror flick.  Because I live in a small town we don't
get half the movies that come out.  Now I want to find it on DVD and have
searched for something that fits the story, but can't find it.  Maybe
someone here can tell me the name.

Mother, father, teenage daughter and toddler son move out to the country for
some reason or another.  First only the toddler sees other people, kids I
believe, walking around the house.  Then the teenager starts to see them.
The parents don't believe her.  Sound familiar from this past late fall or
winter?