I don't believe at all that Cindy or George are involved. Not by their reaction in the beginning. Not during the 911 calls. Why would either of them had said that about a "dead body" smell if they were involved? No, I think they may know now that something very bad happened, but they are still in denial. I don't think they are covering though or they wouldn't have made such a big fuss in the media, bringing attention to themselves. JMHO.
I'm sorry but their behavior has been beyond suspicious from the very beginning; yes
they called 911 AFTER THEY:
Washed the pants "that smelled like the car" per Cindy
Washed the knife
Looked underneath pavers
Looked underneath the playhouse
Looked through the sheds
Kept the car for about 5 HOURS before calling police when George KNEW it smelled like a cadaver.
Tow Guy pointed out that the car smelled like death.
Cindy Tells AMY " I have to find Casey or she might go to jail" She says this hours after picking up the car. What would Casey be going to jail for in Cindy's mind?
They said they did all of the above to see if there was any sign of "foul play" What???????
They should have called LE IMMEDIATELY given all of the circumstances that they hadn't seen Caylee in a month and Casey had been avoiding them (see Cindy's blog of July 3rd)
Instead they did many many many suspicious things for hours before notifying anybody.
They cleaned their daughters mess up as much as they could and THEN called police because they knew they had too. They are not that stupid.
I do no believe in any way after reading those documents that Cindy and George were not aware for at least 5 hours prior to call 911 that Caylee was possibly dead and Casey was directly responsible for it.
You would just have to ignore too many established facts and suspicious actions to believe this information was new to them.