Based on the book, did he or did he not kill his wife?

Rating: Null/10 (24 January 2015)

We saw this highly anticipated movie on DVD at home. I was a bit hesitant at its almost 2 1/2 hours running time but it never seemed overly long.
However when it was over it didn't quite feel genuine, even in the context of a fictional story. Something about the final scenes just didn't seem worth the long story that I had just watched.
The basic premise is straightforward, a man comes home and his wife of 5 or so years isn't there and a glass-top table is overturned and broken, but it doesn't appear to be a burglary. His wife isn't home and he is unable to locate her so he calls police. They find evidence that leads them to believe there was a struggle and a pool of blood on the kitchen floor had been cleaned up.
They begin to suspect the husband who initially cooperates with police but then hires a top-notch lawyer once it seems he is becoming the prime suspect.
The man and the woman are both very flawed people. We find out about half-way into the movie exactly what happened, and the second half of the movie is to understand the "why" and to see how things are resolved.
In spite of the ongoing criticism of Ben Affleck, he is a fine actor and he is good here as Nick Dunne, the out-of-work author who also co-owns a local bar with his twin sister in this Missouri community (filmed in Cape Girardeau) on the banks of the Mississippi River. His wife is Rosamund Pike as Amy Dunne.
There are events and scenes that make you think but overall it didn't ring very true for me. Still it is an entertaining movie and I enjoyed it, but perhaps not as much as many fans.
SPOILERS: Nick is devious, he has a very young 20-ish mistress on the side, but he is not a dangerous person. Amy is the crazy one, we see she had difficult issues previously with men, falsifying abuse reports. She suspects Nick is going to want a divorce and instead she plans to frame him with murder, her own murder, so before she disappears with a lot of cash and an untraceable car she creates a crime scene with her own blood, then cleans it up sloppily on purpose. She leaves a diary, and she tells us she will drown herself. But somewhere along the line she changes her mind, goes to see an old boyfriend, slashes his throat and kills him during sex, shows up back home with no apparent explanation but pregnant. So Nick appears to suck it up and stay with the crazy wife because they are going to have a baby.