India, March 7 -- Did a high-tech blackout cloak the abduction of Nancy Guthrie from her quiet Tucson neighborhood? Five weeks after the 84-year-old mother of "Today" show co-anchor Savannah Guthrie vanished from her Catalina Foothills home, investigators are knocking on doors with a startling new line of questioning: did your internet go dark the night she disappeared?

Door-to-door detectives fanned out across Tucson's Catalina Foothills this week, knocking on doors with a peculiar question for shaken residents: did your internet flicker out the night Nancy Guthrie vanished? The 84-year-old mother of "Today" show anchor Savannah Guthrie disappeared five weeks ago in a suspected abduction caught partially on her own doorbell camera, and...