The way the daughter pleaded with the kidnappers made it look like she knew who it was.
In March there were photos of Nancy and Savannah together and in one photo, standing a few feet behind them was a young man facing the camera who had unique eyebrows. A few months later were photos of the kidnappers and in one of them was a photo of a young man with just the eyes and eyebrows showing. The photo contained the unique eyebrows of the young man in the early pics. The eyebrows matched perfectly.