I wish Maggie had asked Paul Stoddard what evidence he had for his wild accusations. Granted, he has very little evidence that anybody is going to believe, but Maggie doesn't know that, and the question should have been asked. And maybe it would have gotten Paul talking in a straight line.
David Jay doesn't do a bad job as Alexander. I don't get an impression of any interior feelings the way I do with a good actor, but good actors that age are rare, and he does come across as solid and wilful.
Paul was very neatly nasty to Roger. Not bad for somebody who's half off his rocker with worry. Incidentally, I keep being surprised at how well Roger and Paul know each other. Back in 1967, when Jason was around, Roger told Carolyn and Vicky that he didn't know much about Elizabeth's marriage because he was still at school. But I suppose he came home for the wedding, and for holidays.