It is slow-moving but it does build up to some pretty scary scenes. Both actresses are great and the women playing their mothers are also excellent as well. Watched this on OnDemand under the horror section----that, I think, is partly the reason many did not like this. They were expecting more in-your face, terrifying stuff a la more mainstream "horror movies," I guess. If you're looking for that, then this is not for you. It's more like a scary supernatural thriller. And as such supernatural thrillers go, it's a winner. 8 out of 10.