Jabin said:It could if a relative has had their DNA tested. They've closed several cold cases by zeroing in on the bad guy through relatives' DNA.Truvada said:if he hasn't been arrested before on in the database DNA testing will not help here you been watching too much CSIW said:
I would not give up hope yet.
it will heavily come down to the collection of blood evidence and DNA testing. That will provide more clues and information about the crime.
if the killer left behind any DNA...and is of European descent...genealogy mapping will have a chance to identify them
The BTK killer was caught this way
https://people.com/crime/btk-killer-daughter-dna-led-to-arrest/