Confuse at first

I like nicole kidman's film.One of her film is The others,First i was a little bit confused because what i thought is their is really a ghost in their house.The way the story goes is a little bit scary when her child was became and old lady and and when they heared sounds.But when almost at the end it just me laughed because in fact it's them who are ghosts and their spirits are not in peace.Huh!i thought i couldn't sleep again at night.lol!My husband teased me while saying...Scared? and just gave him a fake smile and said ha ha ha!!