The old man has age spots. Zero has a few little freckles, but if you darken and redden the image of zero, you can make them look darker...whoops! Now doesn't that prove Frank is his father? It would be amusing if it wasn't so pathetic. Now we are down to HER teeth and HIS little freckles, some floor boards from the wrong house found 50 years later in an old shed, and a window...of a house no one knows where it was.