mmm I'm not "impressed". Sara, the main heroine and only POV, is quite boring. She is a sort of a mouse. Everything is too exciting or frightening for her and I don't find myself "believing" what she finds so disconcerting.
I have a feeling I'm going to dislike her even more when a man starts controlling her. Since as it seems she doesn't have a back bone. She is just this nice little lady.
I guess the guy(/s?) should have the appeal in this one but since I only have her POV I don't think I'll manage to read all of it with interest..