They have no body.
Today's TV trained American jurors demand the answers to every possible question. They like everything tied up in an easily digestible package, preferably with no large words involved. As Casey Anthony proved, all you have to do is hide the body long enough and you walk (in my opinion).
Though actually it's probably unfair to single out Casey. She has had quite a few apt pupils follow in her footsteps. In my opinion, this case is about one of them.
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