Sunday marks Day 85 in the search for Nancy Guthrie, the 84-year-old mother of NBC "Today" show host Savannah Guthrie.

NewsNation's Allison Hope Weiner spoke with residents in the Catalina Foothills as the search for answers in the Guthrie case ...

The sheriff leading the investigation into the disappearance of Nancy Guthrie is facing new scrutiny after details about his ...

Savannah Guthrie returned to work at NBC on Monday, April 6, a little more than two months after her 84-year-old mother Nancy ...

Emails obtained reveal Pima County Sheriff's Department cooperated extensively with reality TV crew, sharing bodycam footage ...

Elizabeth Smart's father is urging the public to stay focused on verified developments in the Nancy Guthrie case, cautioning ...

A genetic genealogist predicts DNA results in the Nancy Guthrie disappearance could take months after the FBI received a hair ...

Nancy Guthrie Update: Blood Evidence Points to Troubling New Theory ...

Nancy Cox, who for decades was a global leader in influenza research, has died. Cox headed the influenza team at the Centers ...

As Nancy Guthrie remains missing, former FBI agent Jennifer Coffindaffer has explained why there's an interest around Tommaso ...

A Pima County official said Sheriff Chris Nanos “made really bad decisions and then lied about his past.” ...

As the search for missing Arizona grandmother Nancy Guthrie continues, a former detective has revealed a chilling theory ...