Networks used to have research that showed viewers saw only every third or fourth episode of any particular series, so doing serialized storylines would have been death. I suspect that research still holds true today, but I’m guessing.

Of course, characters did change and universes did grow on television back then (although current TV critics would have you believe otherwise). For instance, characters on THE WALTONS grew up, went to war, moved away, suffered debilitating illnesses, and even died. All this happened during self-contained storylines, which is still the way CBS does dramas. And CBS remains the #1 network. Coincidence? I don’t think so.

Of course, WONDER WOMAN was not a drama per se, but a comic book adventure aimed at children, which is important to keep in mind when watching it.