This episode has really grown into one of my favorites. I love the setting, characters, and humor. I agree that the ending has its weak points, but it is still clever, a lot of fun to watch, and somewhat fitting. I think they could have developed the growing madness a bit more throughout the episode. But according to the "Shooting Columbo" book, NBC wanted all the location footage to be used, so some cuts had to be made. I wonder if there were more scenes depicting the slowly increasing insanity of Nick and Lilly which ended up not making it into the episode?

One of the smallest funny moments I like is Nick being upset that Tanner is blackmailing them but relieved that Miss Dudley wasn't Sir Roger's informer. He has such a thing for Miss Dudley that it's hard to blame him for being relieved.