"we have dna tests that prove that our guy was not at the hunter-sherman scene." >> reporter: alison motta spoke with wowt-tv via skype. >> their physical evidence and their dna evidence establishes undeniably, unmistakably and without doubt that the murders were committed by two people and not anthony garcia. >> reporter: the claim was based on what the mottas believed to be a potential match between some unidentified dna found on shirlee sherman's bandana and some dna taken from a suspect in another case. >> they are taking alleles from dna, bits and pieces, and coming up with a theory that never made it to trial, but she throws it out there on the eve of trial, and prosecutors are incensed, and it really chapped the judge.