examining. >> not surprisingly, the stains were near the bite holes, an indication they were left by the person who bit the victim, presumably her killer. global removed the fabric, and performed str dna testing which is a more advanced form of pcr testing. the result, the dna profile from the saliva on the t-shirt did not match roy brown. but whose was it? barry bench's daughter, katharine, offered to help out. >> his daughter was a very courageous young woman who said, i want the truth. i want to know if my father committed this murder. and if roy brown is innocent. she actually contacted us after our papers were filed in court originally and said if you ever need me, i'll give you a dna sample. >> the dna analysis confirmed what roy brown already knew -- that the saliva stains on sabina kulakowski's t-shirt had come from barry bench.