Gone away from me

It seems strange that the police still have not arrested Josh Powell for killing his wife Susan. I keep thinking everyday that I will hear that on the news. So, this morning I read some articles on the case and also checked out the Scott Peterson and Mark Hacking cases. To see how long it took them to come up with evidence and for them to be arrested. From what I get from the  Mark Hacking killing, it was obviously not a planned thing. He left blood all over the apartment and he confessed to his brothers only a week or so after his wife went missing. It only took the police about three weeks to arrest him. Which is what we expect to hear in these type of cases every time. Its hard to believe or want to believe that these crimes were planned and evidence was properly disposed of (because it makes you loose faith in humanity and you spend three months thinking your father, brother or husband could be capable of the same thing). Laci Peterson went missing in December and Scott wasn't arrested until April. They never actually found  much DNA evidence to connect Scott to the crime. They had plenty of circumstantial evidence and were able to piece it together that way. For example: telling the woman he was having an affair with- two weeks before Laci went missing-that he had lost his wife and was sad about spending the Holidays alone. Going fishing the day Laci went missing at the same Bay where later Laci's torso and their sons fetus washed ashore. CREEPY!

So, like I said, I spent the morning reading articles about Josh and Susan and here are the four possible scenarios and reasons Josh has not been arrested: According to me. Which I feel like I can give, considering how much Dexter I have seen lately.

1. Josh is innocent. All the creepy behavior ( which might be that he has Asperger's, a social disorder, that can make you indifferent to emotions) and odd incidents that seem damming are just weird coincidences. And he knows that he can't convince anyone of his innocence, so he is just keeping quite.
2. Josh is one sick mo fo. He knows he made a solid kill. He cleaned up, he covered his tracks and he believes that he is as safe as a basket of puppies. Josh Powell aka Dexter Morgan.
3. Josh knows the clock is close to midnight. Even though this seems to be taking forever, DNA evidence and testing actually takes a deal of time. So does solving a murder.  Especially if they don't have remains, how do you consider it a murder with no body? I think Josh knows its only a matter of time, though. I don't think he moved to Washington, so much as moved his kids to Washington.
4. Maybe the neighbor did it. I get a weird vibe from this dude. Like he might be over compensating for something? You have to read the whole article to understand where I am coming from.