
Nine-Year Cold Case Resolved After Re-Evaluating Prior Results
How lost documentation and misinterpreted matches stalled a case, and how expert re-evaluation restored the investigative path
Case Context:
This case involved unidentified human remains that remained unresolved for several years despite multiple forensic genetic genealogy efforts conducted at different stages of the investigation.
Situation:
The case was initiated 7 years prior to our involvement and initially outsourced to a forensic genetic genealogy vendor. That effort did not produce an identification, and the primary recommendation provided at the time was reference testing.
Several years later, a second vendor was engaged. That effort similarly did not produce actionable investigative direction, again recommending reference testing without resolution.
When the case was revisited years later, the investigation lacked preserved genetic genealogy context from the earlier efforts, including documentation of key matches that had been available at the outset.
Approach:
A review of the original vendor materials revealed that early database matches had been identified but not preserved, documented, or prioritized. Critical information, such as nicknames, relationship clustering, and shared-match context, was not retained.
As a result, high-value matches that existed at the outset were no longer available in the databases when the case was re-examined.
Analysis of the remaining genetic data indicated that the unidentified individual was likely adopted or involved in an unknown parentage situation.
Further evaluation showed that the surname referenced during prior efforts was not biologically accurate for several high-level matches. Research was redirected to the correct biological surname shared across multiple related individuals, and a new family tree was constructed under conditions of significant endogamy and limited database match availability.
Outcome:
Despite the permanent loss of early match data, continued outreach to and monitoring of relative activity ultimately revealed a close sibling-level match.
This discovery confirmed that the unidentified individual had been adopted and missing for years, allowing the case to move forward after nearly a decade of stalled progress.
Why This Mattered:
This case demonstrated how failure to preserve genetic genealogy findings can permanently impair investigations. Accurate documentation, correct interpretation of family dynamics, and recognition of adoption scenarios were essential to restoring investigative direction years later.
Key Takeaway:
Forensic genetic genealogy requires disciplined documentation, careful interpretation, and periodic expert re-evaluation. When early assumptions are incorrect or genetic context is lost, cases can remain unresolved indefinitely—even when viable DNA evidence exists.
Next Steps:

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