sample taken from a doorknob, leaving the house? that was evidence item #805. they called a dna expert. so you can see that all the way across that top line the numbers are the same as james knapp and there are many points of difference with steve democker. your point was that on each of these analyses, james knapp matches each one of these, and steve democker doesn t. that s right. reporter: in fact, neither steve democker s d-a, nor his fingerprints, were ever found at the crime scene. so, had police focused on the wrong man all along? and because steve democker knew that, did he make a foolish mistake like a frightened man would? the anonymous e-mail, the voice in the vent, all of that occurs once he s placed in custody, loses hope and becomes desperate. that should not, in our opinion, should not have been introduced in this trial. that s a whole separate trial, a whole separate issue. reporter: the defense tried to keep all that out of the trial did not succeed.
counter? and how did knapp s dna get mixed with carol s blood in a sample taken from a doorknob, leaving the house? that was evidence item #805. they called a dna expert. so you can see that all the way across that top line the numbers are the same as james knapp and there are many points of difference with steve democker. your point was that on each of these analyses, james knapp matches each one of these, and steve democker doesn t. that s right. reporter: in fact, neither steve democker s d-a, nor his fingerprints, were ever found at the crime scene. so, had police focused on the wrong man all along? and because steve democker knew that, did he make a foolish mistake like a frightened man would? the anonymous e-mail, the voice in the vent, all of that occurs