Caylee Anthony the Buried Secret?

Does anyone else think George Anthony killed his own daughter, opps I mean granddaughter? George has experience as an officer. Here's my theory - George is the biological father of Caylee (his own granddaughter), he killed Caylee, was involved with her death or accident that led to death, and hid the body for 31 days so that DNA could not show that he is the father of his daughter's child. This is the family secret and Casey lies because of all the abuse that has happened to her for several years. Also, she's probably embarrassed and lies to cover up the secret that she is a victim of incest. What's your take?