I enjoyed this story, it was creepy, albeit frustrating. I liked the setting and the weird things that kept happening in Towneley Manor. What frustrated me is the reluctance of Tamara, the main character, to talk to her husband about anything. I would have been a lot more outspoken. Also frustrating is some of the loose strings left untied at the end. We're all dying to know what's behind the door, what's in the envelope, but she's like, "nah, don't go there" and we don't. Bummer.
Other than all the weird loose ends that are never adequately explained, the story kept me interested through the end. If I'm ever in a horror novel, I'll talk a lot more and look behind more doors.