[Warning: Potentially Triggering Content] Today show host Savannah Guthrie is facing an unimaginable nightmare as authorities in Arizona reveal a deeply troubling theory about what may have happened to her mother, Nancy Guthrie, who has been missing since the weekend. And the more details that emerge, the heavier this situation feels. Police now officially believe that Nancy, who is 84, was likely taken from her home while she was asleep.