Murder charges filed in absence of body

http://www.joplinglobe.com/local/local_story_344233449.html

Duane E. Wahl, 33, now has another charge to add to his rap sheet, first-degree murder. He is being charged in connection to the disappearance of his, now former room mate, 37 year-old Richard Davis. The body of Richard Davis' body has yet to be found. This charge, according to the Crawford County District Court, stems from DNA evidence that was found inside of the home in Mulberry Kansas.
Now there are a lot of contradictions in this article that really bother me. It was stated that Davis' wife meet Duane online. That Davis and his family were residents of Tulsa when all of this started. That Davis, after his wife had been talking to Duane online and became friends, packed up his wife and children and moved in with Duane and his girlfriend in Mulberry. Duane had six counts against him, starting in 2008, for aggravated indecent liberties and criminal sodomy against children at that time, and had plead guilty to one of them already, did Davis not know about them?
Also, Duane's girlfriend stated in the article that he had held her captive inside of the home, that he had tried to poison her and she was in fear not only for her safety but also for the safety of the Davis children. She stated that she had filed a protection order against Duane and the very next day, Davis went missing. What is the connection here. There is something far more than they are saying going on here. In the interview that happened with the girlfriend, she stated that Duane just wanted to have control in his life, (like everyone else) she acted loving and upset. There was no mention of the Davis children and the wife. What happened to them? Things do not seem to tie together well. What is really going on? Something!
The reason that I feel this way is because, nothing makes any sense, there is to much that not only makes you really question things, but is a complete contradiction of sorts. I would really like to know what is not being said in this matter. There is most definitely an underlying issue or issues here.