This is a so-so episode. Mary's parents appear in Minnesota and move into a house very close to Mary's house in Minneapolis. The Mom is Nanette Fabray,a capable and accomplished actress that does a good job in this episode. Mary's father is Bill Quinn,a veteran actor that is probably most famous for being the bartender on 'the Rifleman' tv series in the late 1950's. These two that portray Mary's parents make a reasonably believable married couple on the show.
The individual actors and actresses do a decent job,it is at least obvious that they are putting some effort into this. The trouble with the show is that the story itself isn't very interesting.
The story is that Mary's parents are watching her like a hawk and cramping her style. That is pretty much the whole gist of the episode,for better or worse. This episode has it's moments,it isn't completely without entertainment value-it is just a bit weak and slow.
See what you think,don't take my word for it.