I'm starting to think that I currently have a thing about structure, because I seem to be focusing all my reviews on that aspect of novels.

Duncan's secret was the one I was anticipating being the worst and it was, but there's something about the normality of how Viv's life took the direction it did that really got me. She met a married man on the train, bonded, made a decision and her life was never the same. So realistic, even if written out like that it sounds like the stuff of romance novels. It's the tiny moments that pull your life along one path.

I would encourage you to read The Little Stranger soon. I think it's excellent and creepy (and then we could talk about it, yay) :)