Flynn is an artist at this multi-viewpoint storytelling. I love how small details come together in different versions, having completely different feels. For example, (view spoiler)[when Libby says she heard Ben's voice calling to her "stay where you are" and it's sinister and ominous. Then you hear it from Ben's side and you're like "see, he knows that bitch is just plain crazy". (hide spoiler)] The anticipation of getting to what comes next, the slow unraveling of details... it's all just great. I was very satisfied at the conclusion of this story. 
 My only remaining question is (view spoiler)[ whether Runner actually knew what happened or if he was just playing his usual money-gain games when he wrote that letter to Libby. (hide spoiler)]