“You Were There: Reformation” is part of a series of plays in which a radio show host interviews people who knew Martin Luther including Luther’s sister, Hildegard Luder, who remembers their childhood;  Johann Tetzel, a Dominican friar; and Rabbi Yehuda Ben Josef, a childhood friend who responds to questions about Luther’s writings on the Jews.  A seminary classmate Father Erhard Schafer, Benedetto Cardinal Fiore a Roman Catholic cardinal, and a young girl Lisette who witnessed Luther’s trial along with the Announcer and Host, complete the cast.