The casey anthony trial any theories?

the only theory" other than casey did it" , that fits is LEE her brother did it! think about it , on his testimony very very jealous of the baby kay lee , and before that was jealous of casey , he lived in the home where the pc searches of how to make chloroform was look up 84 times , he owned the car before casey did , so he could have kept a key, he was in position to know caseys daily habits, so what if casey was giving cay lee something to make her sleep , and leaving her locked in the trunk or back seat of her car , lee knows this so he checks chloroform out on the INTERNET , he waits till casey is in the club, and cay lee is asleep in the locked car , lee unlocks the car , uses chloroform on the sleeping cay lee till she stops breathing , he removes all trace of him being in the car , he re locks the car leaving cay lee dead waiting to be found , by casey who would totally think she had given cay lee too much of what ever she was using to make her sleep and killed her and all that followed was her trying to cover up the fact that she had killed her daughter, mean while lee has gotten rid of his competition for his parents affection cay lee dead and casey in jail for murder. however this doesn't mean casey is innocent she should still go to jail for life