Nancy Guthrie investigation takes dramatic turn as retired FBI agent points to a ‘big find’

A retired FBI agent believes a walkie-talkie was used in Nancy Guthrie's disappearance. This explains why cell phone tracking yielded no leads. Surveillance footage showed a potential suspect with what appeared to be a walkie-talkie. This suggests the crime was not a solo act. Authorities continue their search for the missing 84-year-old.