it escalated and escalated. >> you may proceed. >> the stunning opening statement by jose bias alleging sexual abuse opened the door on the mystery yet unsolved was caylee anthony the child of incestuous affair. >> casey wanted a brother -- lee wanted to follow in his father's foot steps and as a teen he also tried to assault his sister. it didn't go that far. it went to a paternity test to see if he was the father. >> they forced the parents to give samples. lee did not. he complied only after investigators served a war rant based on casey's statements to police. >> this fbi report from december