I enjoyed it, but the ending nearly ruined it

Rating: 8/10 (6 February 2015)

For its first hour, it is a well done murder mystery: did Nick Dunn kill his seemingly angelic wife? All signs seem to point to him, perhaps even a bit too much.
In its second hour, it successfully changes to, basically, a chilling portrait of this evil bitch plotting to frame her husband for her own murder. So far, so good.
But in the final 20 minutes, the story awkwardly, unsuccessfully switches gears again, and becomes a satire, giving us no resolution to the story, and expects us to ignore several gaping plot holes. We, the audience, were taking the story mostly seriously, but then we find out we were not supposed to, apparently, which makes the entire two and a half hour ordeal seem pointless.