It seems the authorities are tracking down a new lead! It's now been 12 days since Nancy Guthrie disappeared into the night. The FBI and The Pima County Sheriff's Department have been hunting down countless tips, and made great strides earlier this week when they obtained Nest doorbell camera footage from Nancy's front porch. But they still haven't arrested anyone, identified a suspect publicly, or found the 84-year-old. Once again, they're now asking for the public's help.