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Walls? >> there probably is more dna at the crime scene it was a very bloo bloody crime scene, there would be flood on tblood -- the wall depends on what parts of person were injured, if you cut an artery there will be spurting blood. >> there will be more suspect dna because he held that victim in place there will dna of his on their clothing, reason there blood on the wall, a cast off pattern, he was the stabs them repeatedly that blood is flinging off that knife to the wall, that is how we can sometimes determine the number of stab wounds. >> there could also be --

Other day one i on one i one in three -- ther 300 trillion. >> that a number we use in court to specify that this is the one and only person on earth who could have contributed to this dna. >> good lord in heaven. the only person on earth? ! that supplied that dna is the father of the killer? wow. so, my question -- >> well. nancy: my question, how will a whiley defense attorney think johnny cochran come in and try to crack the state's case, can be that done -- stay with us.

Bryan kohberger was connected to this crime. nancy: joining me right now special guest, a dna genius, cc moore. this is what i'm understanding out of all that, a blood bath at the scene, there may be more, i suspect there will be, one bit of dna that was found is in the snap on the sheath of that knife that foiled folds over the knife. explain to me. how that correlates to dna found in the pennsylvania kohberger family home from the father. >> we don't know what type of dna was on that snap. it was most likely touched dna. they would have take than touched dna, might have been a few skin cells...

Did. laura is joining me. tell me about the dna that according to the affidavit was found in the murder home. >> dna that was discovered came off of the sh sheath that came from the thick blade knife that investigators believe was used in the murders. it has a snap on the top, somehow the person left it behind, it is detailed as probable cause affidavit it was found lying next to the body of madison mogen on the bed, in a were able to detract dna from that, as we know. we're also later surveying the parents home. bryan kohberger's home in pennsylvania, they went through the trash, they were ab...

And dm opened her door, face-to-face with the alleged killer, walks past her, she strikes him male, 5-10, not muscular, bushy eyebrows, the wide side an speeds away. and police called 11:58 a.m. they find 4 victims brutally stabbed, investigation com commences. >> technology the cell phone, the data. the towers. all of the technological data does one thing and one thing only, it corroborates dna. dna they they searched murder scene to try to find dna from the killer, they did. laura is joining me.