This isn't terrible but it's a bit like a columbo movie. The opening scene shows you what's going on and takes away all the mystery and intrigue.
I thought that was interesting and I wondered where they were going to go with it. I didn't wonder very long.
Predictable jump scares, very little suspense and an all too tropey characters including a personal bug-bear of mine; that one guy who just knows exactly what's going on and can expertly explain it all, in detail to our protagonist.
I like two things about this movie. Almost the whole movie is inside the house which gives the movie what little atmosphere there is, and I like the ending. Not the climax, not the third act, just the very end. That's about all though.