Former FBI Special Agent Names Most Important Evidence in Guthrie Search

former FBI agent has identified what she believes is the most critical piece of evidence in the Nancy Guthrie disappearance — and says it’s something investigators may not be emphasizing enough. While blood traces, DNA samples, and a glove found inside Guthrie’s Tucson home have drawn headlines, experts argue that the Uber ride Guthrie took before vanishing could hold the key to unraveling the case.