All the spin and fictional stories about the DNA being degraded and unusable are mostly just that...spin. The BPD refused to take the non Ramsey DNA seriously. In my opinion the grand jury would have never known about the importance of the mystery DNA, and other important evidence, unless Lou Smit fought to legally be heard by the grand jury.

In the final chapter I think we'll see clearly that the BPD was responsible in thwarting justice.