Nancy Guthrie is among the thousands of people who go missing in the U.S. each year. But experts describe her case as "strange," with many unique details, from her age to her celebrity daughter.

The "signal sniffer" being used in the Nancy Guthrie investigation was mounted on a helicopter on Monday.

More than 4,000 calls came into an Arizona sheriff's department within 24 hours after the release of videos of a masked ...

The search for Nancy Guthrie continues as today marks 17 days since the 84-year-old went missing. Investigators are awaiting ...

Nancy Guthrie was taken from her home in Tucson, Arizona, more than two weeks ago and remains missing. Authorities have yet to publicly name any suspects or persons of interest as they investigate ...

LLMs have recently helped find solutions to a number of minor longstanding problems. But a new plan called First Proof is really putting them to the test ...

Jarvis Butts pleaded guilty Thursday to murdering Detroit teen Na’Ziyah Harris. Here are the text messages between them before she went missing.

The black glove being analyzed, which contains DNA evidence, was one of about 16 recovered near Nancy Guthrie's house.

Nancy Guthrie, 84, the “Today” show anchor’s mother, vanished from her Arizona home on Feb. 1. In the time since, very little new information has come to light. By Claire Moses The disappearance of ...

WASHINGTON— The Supreme Court agreed Monday to decide whether people picked up on immigration violations also can face charges of identity theft if they use Social Security and other identification ...