A strand of hair once seen as a potential breakthrough in the Nancy Guthrie abduction case has led investigators nowhere. Hair Lead Exhausted as Nancy Guthrie Investigation Passes Six-Month Mark'The hair was done ... and there was nothing,' Nanos told ABC News in an interview, confirming the strand did not point investigators towards a suspect. Investigators had hoped a specialised lab such as Astrea Forensics, the California facility that helped secure a conviction against Gilgo Beach killer Rex Heuermann using rootless hair DNA analysis, might be able to replicate that breakthrough. BREAKING: Nancy GuthrieAccording to ABC news the testing on the hair found in Nancy’s home is complete and did not point to any suspect. This week marks six months since Nancy Guthrie was taken from her home.