Reese Witherspoon's making it into a movie, so read the book now. Before bed at your own risk. It's about a writer who goes on a group weekend away in the woods. Fast forward to her waking up in a hospital bed, with no recollection of what's happened…except that someone's dead.
Kind of like "The Affair" in book form (minus the affair). First you get his story, then hers. Hint: they're very different. Follows a relationship from meeting in college to getting married weeks later to decades down the line.