Fiction, whether in books, movies, or TV often portrays circumstantial evidence as being weak at best and a case built on circumstantial evidence as one that has no chance of success. The unfortunate thing is that a good chunk of the American public doesn't seem to appreciate what the word fiction really means. They think it means the story is not real, but that the science, laws, processes, etc that are presented in that fictional tale are nevertheless accurate. The dramatic has more appeal than the mundane; a Perry Mason TV show that almost always ended with a surprise confession is more fun to watch than sitting in a real courtroom on most cases. The reader/watcher likes to think that real life is just as dramatic. So they take the elements of the story as a accurate even though they know the characters aren't real. It wouldn't be so bad except that there are people out there who base some of their decisions on those elements they see in fiction.
For those reading this thread who don't know, circumstantial evidence is simply a term describing a particular type of evidence in which the evidence infers the fact that the attorney is trying to establish. Even fingerprints are circumstantial evidence; fingerprints aren't the absolute proof of identity as the public (and law enforcement agencies) tend to believe. Like any other type of evidence, circumstantial evidence can be either strong or weak. A good, very clear complete fingerprint can be very compelling, for example, whereas a smudged or incomplete print is less convincing. Some very strong cases are built entirely on circumstantial evidence. Some cases with largely direct evidence turn out to be very weak.
There is a reason why the term "artistic license" exists. Most human events are not thrilling to watch, including many trials. So the author/screenwriter has to take some liberties (sometimes a lot of liberties) with the facts to spice things up to create an interesting story. A writer would have to change things quite a bit to make a Tax Court case dramatic because the rules of the Tax Court and the technical nature of tax cases pretty much ensure there won't be any drama at the trial. A lot of civil cases are like that: both sides already know all the evidence that is going to be presented. The big dramatic reveal that writers like just doesn't happen very much in civil cases. You'll get a bit more drama in some criminal cases, but most of them are also not compelling viewing. It's one reason why Court TV struggles to get viewers. It was near the bottom of total viewership numbers in 2023 (well below the WeatherChannel and just above the Tennis Channel), and probably would have fared even worse if it didn't have a few trials involving famous people and didn't have its own original scripted (i.e. dramatic) content in addition to airing trials. The vast majority of trials are just not compelling to watch.