The scene inside the house was terrifying. Lights on. Wallet, phone, and car untouched. And Savannah Guthrie’s 84-year-old mother gone without a trace. Now, detectives say this wasn’t a disappearance. It was an abduction. As the FBI joins the case and the sheriff makes a desperate public plea, one question haunts everyo… Authorities now say the evidence inside Nancy Guthrie’s...