Savannah Guthrie is sitting down with Hoda Kotb for her first interview since police said her 84-year-old mother, Nancy Guthrie, was taken from her home outside Tucson, Arizona, overnight on Jan. 31.

In an interview that aired in three parts this week, Savannah Guthrie sat down with NBC’s Hoda Kotb to discuss her mother, Nancy Guthrie, for the first time since she was reported missing from her Tuc...