Investigators say they have a promising new lead in the case of an unidentified skull found in Winneconne, Wisconsin, 40 years ago. The skull was originally discovered by boys diving for bottles in the Wolf River in 1985 and it’s one of only a few pieces of evidence that they have to work off of. Now, authorities have begun a search for relatives of the unidentified skull, named "Joanne Doe." They're collecting SNPs, which are genealogy profiles based off of millions of ancestral characteristics, to narrow down the search. Investigators say they will continue making cold calls to potential relatives until the search is complete. Anybody with information about the case is encouraged to contact Lt. Braman at (920) 236-7341 or by email at CBraman@winnebagocountywi.gov. - @crmnallyobsessed