Good episode. Silly plotline, but good episode. Roger was, of course, wonderful, though I thought he was memorably cold when he turned his back on David.
I'd like to know just how Barnabas worked the trick in the mausoleum. The answer that springs to my mind is Duco's Cement, and I like to imagine Barnabas getting it all over his fingers and swearing up a storm, but I don't think that's correct.
Why did Sarah leave the instrument (which looks like a recorder to me, not a flute) in the mausoleum? She told David not to tell anybody about the secret room. She bawled David out for going to the Old House after he told her not to, and then when he started to tell about the secret room, she did her window-and-music thing. But then she left her instrument on the coffin. Very strange.
The last Robert Gerringer episode? Alas, alack.