phillips' bone marrow. it did not match the dna from the crime scene. >> i called and spoke with susan's mother and she was very disappointed, but you know, i tried to assure her that we would continue to go forward and try to identify the suspect. >> i was angry at the time because i felt we had closure, it was done with. >> and there was more bad news. the dna did not match anyone in the statewide database of known criminal offenders. if the killer wasn't phillips or anyone who committed a felony before the dna database was created, then who was it? >> where do we go from here? and the obvious answer is, let's dig back into the case and let's see who else was a suspect in those days, who else can we get a dna standard from. let's just going until we run out of suspects. >> the first person on their list was daniel woloson.