Interesting article from
The Atlantic called, "Solving a Murder Mystery With Ancestry Websites". It made me think of Walker County Jane Doe:
https://www.theatlantic.com/science/archive/2017/08/jane-doe-murder-ancestry/536916/
Apparently a teenage girl was murdered in Washington state in 1977 and while they were able to capture the girl's killer, police have never been able to identify the victim. The only thing the killer knew about the victim was that she said she lived in a trailer with two guys near the lake where the murder took place.
Excerpt from the article:
"But after so many dead ends, investigators might have found a way to finally close the case. Jane Doe’s DNA has so far failed to identify her, but perhaps it can be used to identify a family member instead. As genetic testing has become more accessible and popular, the Snohomish County sheriff’s office is cautiously optimistic that a parent, a sibling, a cousin—some relative of Jane Doe—has explored websites like Ancestry.com to learn more about their family tree. If someone has wondered enough about their heritage to submit a DNA sample to one of these genealogy databases, there could be a genetic crumb trail that leads to Jane Doe’s identity."
Would be nice to think that since they likely have Jane Doe's DNA police might be able to determine her identify through relatives that might have submitted their DNA to genealogy websites. That and if there was DNA collected from the bite mark on Jane Doe's shoulder it might also help point police in the direction of her killer.