The Woman Inside by E.G. Scott
A wild ride of addiction to prescription pills, lying, adultery, and stalking in which a married couple slowly self destructs. Not sure I really liked any of the characters, but their motives were clear and I enjoyed the POV of Rebekah, the main protagonist. While initially I was a little confused about the different times (before/after) for two protagonists, I eventually caught up and enjoyed the latter pages of the story.