Some good ideas and some good moments (spoilers)
...but far too much filler. Some of the "scares" e.g the ballerina were laughable, and in the last episode of season 2 when the three are chained up in the dungeon screaming it was somewhat ridiculous.
However, the basic premise of the creatures trying to get in etc. is pretty awesome.
If they can stop with the "two people talking" filler scenes ala the later seasons of The Walking Dead maybe they would have something really good.