Investigators have turned to genetic genealogy to identify DNA found at Nancy Guthrie's home after her kidnapping.

According to sources close to the investigation, there are concerns that DNA recovered from Nancy Guthrie's home may not yield a usable profile for comparison.

Investigators in the Nancy Guthrie case have turned to genetic genealogy as they try to make the most of potential DNA ...

DNA science has helped solve criminal cases for decades. But increasingly, investigative genetic genealogy — which was first used for cold cases — is helping to solve active cases as well.