adam shacknai have any marks or scrapes that there had been a struggle with anyone. >> none. >> same to get rid of dna. all right. adam shacknai admits that that morning he cut rebecca down, he loosened the ropes on her wrist to check her pulse. he gave her mouth to mouth resucitation, he gave cpr pumps to her chest -- >> and there's no dna? >> and how much dna and how many fingerprints are found on the knife, the rope, her body, how much? >> none. >> zero. zero. >> zero of adam's, that is. rebecca's dna and fingerprints were everywhere. according to greer, that means adam, who had no criminal history, knew exactly how to wipe down the scene, somehow removing his own fingerprints and dna, but leaving just rebecca's. of course, it could also mean that adam simply wasn't there when rebecca died, which is exactly what law enforcement came to believe. i'm guessing that if you walk in court in any case, and opposing council said, there is no evidence here, there are no fingerprints and there's no dna, and that is the proof of the case that i am bringing, you would think to yourself, i hav