I will have to answer you after my wife wakes up! Ngaire, my answer would have been the Piano Teacher? Wasn't Violet the next door neighbor? I think it is Geoffrey. But I'm not sure.
Diana is the trivia buff in our family. For Christmas, I got her he Turner Classic Version of Scene It! My son and I were lucky enough to get the first roll and went out to a huge lead before we missed a question. That was the last time we saw the dice. From the very first roll until the end, she didn't miss a single question and beat the two of us to a pulp!!!