A family of Jewish refugees settles in a small cottage on Walton's Mountain. Terrified that the Nazi persecution that had forced them from their homeland has followed them to America, Professor David Mann warns his family not tell anyone that they are Jewish. Crestfallen that he will not be permitted to celebrate his Bar Mitzvah, Paul Mann loses all respect for his father--and it is up to the Waltons to convince the Manns that their dark days are past, and to reunite the Professor and his son. Original Broadcast date November 9, 1972 (CBS).