I found out about Jesse's statement to police about this after the prosecution rested. I don't think her parents knew anything prior to the day they got the car and tracked her down. However, I came to believe after reading JGs statement that perhaps Caylee did drown-after her mother duct taped her face and threw her in the pool to shut her up. That would explain the ladder left attached to the pool-had to get in there to retrieve the body. All my speculation based upon the drowning theme that may have been present as LP claimed to Jesse.