If the DA can prove that JB´s head injury was a result of an accident then that alone would smash the intruder theory. This can be solved without geneticists. The DA would need to consult with a structural engineer who could tell her how the head fracture occurred. The autopsy report is enough to take to court and get a conviction. The ransom note will not help because handwriting analysis is not an exact science. The DA must also answer the questions asked by the grand jury about DNA found on JB´s panties. Tests taken by forensic scientists prove that new underwear does have DNA. The DNA found on JB´s panties was already there probably as a result of the manufacturing or packaging process.