A fact from In the Best of Families (miniseries) appeared on Wikipedia's Main Page in the Did you know column on 13 May 2023 (check views). The text of the entry was as follows:
Did you know... that the miniseries In the Best of Families was based on the book Bitter Blood which in turn is a recount of the real life murders of Fritz Klenner?
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I'm going to go backwards as I think that is the best way to lay out this review:
6. Illustrated, if possible, by media such as images, video, or audio. Y
The few images that are used in the article are relevant, and there doesn't seem to be a whole lot of relevant images elsewhere (I tried finding one for a young Kelly McGillis on Commons but there was none).
5. Stable: it does not change significantly from day to day because of an ongoing edit war or content dispute. Y
No edit wars here. Definitely stable, looking at the history.
4. Neutral: it represents viewpoints fairly and without editorial bias, giving due weight to each. Y
It's written neutrally, with no editorial bias that I see. Since this isn't a controversial topic, I think it does a good job of representing the sources, and the critics, fairly. However, I see an issue that shouldn't be a problem if fixed:
Delete Some critics panned the miniseries, and exchange it with a generic 'the miniseries garnered generally negative reviews' or something similar (you can delete it completely if need be). The word "some" in this context seems like a vague WP:WEASEL word. For the same reason, delete the phrase Other reviews were more positive. Typically, a Rotten Tomatoes rating is placed at the front to characterize critics' general response, but, since this miniseries is not rated on Rotten Tomatoes, and does not seem to be rated by any major (RS, of course) rating company, I think characterizing the general opinion is unnecessary.
Based on my reading of the sources, the article is about as usefully detailed as it can be. The plot summary is broad, yet refined; the production section is similar. The release section is concise and to-the-point. The critical response section is, while a little long for my taste, well within what could reasonably be described as staying focused on the topic.
Nothing seems to be controversial. At a quick glance, some of the sources are already considered reliable at WP:RS/P. Reading through it, the sources are generally reliable for this type of thing.