It sure looks like LE is keeping this story to themselves...well as much as they can . What really nails it for me is that this is the exact story cindy was telling the FBI agent when the 4th video ended and so far I don't see a 5th video, so whatever cindy went on to talk about they aren't releasing.
I'll tell you I watched cindy's video and I came away with a belief that the FBI agent was acting more like a psychiatrist, just listening to her and maybe hoping that she would talk herself through this, and she did...it is barely a nanosecond but she puts her head down and plays with the water bottle as the agent is telling her that casey was the last person to have seen caylee and that she is the one who knows where caylee is it is brief but it is an important moment for cindy, she must choose to allow what she knows to be true about caylee and what casey has done or she must push that away and continue to play detective (a roll she seems to be familiar with) and solve casey's riddle (problem) and it is within those seconds that she then launches into the BP story and the tape ends. Cindy is willfully choosing this path and it will likely have serious consequences for her for the rest of her life.
Sorry for the run on sentence.
You can believe [George &] Cindy, or, you can look @ the objective evidence and draw your own conclusions. You make the call. 
