Nancy Guthrie vanished from her Tucson home in late January, and more than four months later the search for the 84-year-old mother of Today co-anchor Savannah Guthrie is still active, with investigators treating the case as a suspected abduction and no suspect publicly identified.
A veteran forensic expert has now floated a grim theory about how the case may have unfolded, but officials have not confirmed it and readers should treat it as an outside opinion rather than established fact.
