While Nancy Guthrie was last seen by loved ones on January 31, investigators believe that January 11 might be a significant date into her disappearance. Nancy's family, which includes daughters Annie and Savannah Guthrie as well as son Kamron Guthrie, posted a message on social media asking for assistance in providing footage related to their mom's disappearance and included the date January 11. "We continue to believe it is Tucsonans, and the greater Southern Arizona community, that hold the key to finding resolution in this case. Someone knows something.