Did Nancy Guthrie's alleged captor stake out her house before the kidnapping? We're now into the fourth week of this heartbreaking case and, sadly, investigators still don't have much to go on. DNA samples have turned up little to nothing so far. Savannah and her family have announced a reward of up to $1 million for information leading to Nancy's return. The only really important evidence so far has been the doorbell footage that shows an armed, masked man outside the front door of the 84-year-old's home on the night she disappeared.