My least favorite book in the series so far.
There weren't enough moments of levity to break up the nonstop hostility and bickering between the main characters. Jack was a jerk to Mary for years, but the book REALLY wanted you to know how broken he was and laid it on pretty thick; it felt like a ham-fisted attempt at excusing his behavior. Mary was a boring doormat, and Jack didn't really to work for her forgiveness.