Bit by little bit they had to take the jurors into the lives of Nancy and Brad. What appeared to outsiders to be nothing but gossipy clucking hens, was really information that came from Nancy herself. Nancy had no other way of talking to the jury, outside of the condition of her body.
Her family and friends were her voice and I think they did her proud. All of the bashing they took. Just awful. Unconscionable.
A troubled marriage was really much more than that by July 11, 2008. Cooper plotted and planned his wife's murder. By lunch time on Fri July 11, he knew exactly where he was going to dump her body. He left her there to rot, wearing almost nothing. He knew exactly the one item of clothing she was wearing and he let this little morsel out to experienced detectives, not understanding that he just dug himself a big hole.
He removed the diamond necklace from his dead wife's neck, not understanding that her friends knew she wore that necklace everyday, 24x7 and never removed it. He didn't understand that missing items from the foyer would be noticed. He didn't understand a lot of things, including that people do notice and understand patterns of friends and family.
He thought he was technically superior than anyone else. In the end technology hoisted him by (how does Kurtz phrase it?) Oh yes, his own petard! Kind of fitting to have a techie dude brought down by the tech he thought he mastered.