India, March 2 -- Amid the investigation into the Nancy Guthrie case, Callahan Walsh, co-host of 'America's Most Wanted,' told Fox News Digital that there is "a lot that sticks out" in the disappearance. Walsh, who works closely on various missing persons cases, noted that the fact that Nancy has not been found yet makes it "very much a unique case."

Walsh also said that not many seniors go missing, adding that they generally wander off or get in the car and are not able to navigate back home.

"The way this investigation has ebbed and flowed, it's gone from hot, to cold, to hot [and] back to cold again," Walsh said. "Our hope is that Nancy is found alive [and] that she is brought home and reunited with her family."

Wash is the brother ...