ORLANDO, Fla. – Modern DNA testing and forensic reanalysis have cast new doubt on the evidence used to convict Tommy Zeigler in 1976 of four murders that occurred on Christmas Eve 1975, his attorneys ...

Use of DNA evidence against the 'Monster of the Miramichi' set important legal precedent for decades to come, according to one expert.

In a French criminal trial, conventional DNA analysis couldn’t distinguish between twin brothers, but emerging scientific ...

A glove currently regarded as the best hope in the hunt for kidnapped Nancy Guthrie will likely prove a red herring, a leading DNA expert told NBC's Today. The black nitrile hand covering was found ...

An investigation initially punctuated by ransom notes and public pleas from family members for Nancy Guthrie’s release has since transitioned to investigators seeking results from DNA evidence ...

Tucson, Ariz. (KVOA) - Monday marked day 23 in the Nancy Guthrie investigation. There is still no sign of the 84-year-old mother and grandmother. Hundreds of investigators continue to track leads.

Suggested Citation: "Executive Summary." National Research Council. 1996. The Evaluation of Forensic DNA Evidence. Washington, DC: The National Academies Press. doi: 10.17226/5141. This committee was ...

Investigators are analyzing DNA evidence from the home of missing 84-year-old Nancy Guthrie. Previous DNA testing on gloves found two miles away did not produce a match in the FBI's national database.