Four months after Nancy Guthrie vanished from her Tucson home, the FBI is now weighing powerful new technology tools that one expert claims could finally unlock the mystery of her disappearance and expose the suspect at the centre of the Nancy Guthrie case.
Morgan Wright, chief executive of the National Center for Open and Unsolved Cases, said he believes the next real movement in the case may come not from a witness stepping forward, but from investigators finding a better way to read the evidence they already have.
