Former FBI profiler analyzes newly released evidence in Nancy Guthrie missing person case, revealing key details about suspect behavior and forensic clues.

An FBI profiler who worked on the Unabomber case explains why Savannah Guthrie’s missing mom investigation may seem stalled — and why that doesn’t mean it is.

The Nancy Guthrie case serves as a somber reminder that not all crimes are driven by the bottom line. As the FBI peels back the layers of this investigation, the focus remains on bringing Nancy home safely and understanding the dark motivations of those who targeted her.

A retired FBI agent hailed as one of the "pioneers" of contemporary criminal profiling has offered insights into the possible "personality" of Nancy Guthrie's abductor. The disappearance of the 84-year-old has gripped global attention in recent weeks, yet ...

An ex-FBI criminal profiler has offered his insight into the Nancy Guthrie case, noting that a tattoo may be a key piece of evidence. In a recent interview, the former FBI agent shared his thoughts on how investigators can identify the suspect.

OK. We're now joined by former FBI agent and FBI profiler Mary Ellen O'Toole. She worked in the agency's Behavior (ph) Analysis Unit for more than a decade and is now the director of the forensic science program at George Mason University. Good morning ...

Weeks after 84-year-old Nancy Guthrie vanished from her Arizona home, authorities are still working to identify a suspect. Nancy, the mother of NBC News anchor Savannah Guthrie, was reported missing on February 1 from her residence outside Tucson.