This is just a prelude to the big trial for the murder of his wife, who disappeared 10 years ago. While in jail awaiting trial for his wife's murder, he conspired to kill his in-laws. I tried to find a good link that told the history of this bizarre case, but so far, no luck. For now, this link will help explain some of what's going on.
Nashville Police Department Media Release
http://www.police.nashville.org/news/media/2005/08/03a.htm