Police in California believe that they’ve cracked a decades-old case involving multiple rapes and murders in the 1970s and early 1980s.
Finding their suspect involved more than just the modern ability to extract DNA from crime scene samples. Since the DNA didn’t match anyone in their law enforcement databases, police turned to a free online database of DNA called GEDMATCH.
On GEDMATCH, people researching their genealogy voluntarily post their ancestral DNA profiles to help in building their family trees.…