Looking back, the last century feels like the moment genre television quietly defined its contract with the audience. Most of those early experiments arrived in short waves, and like the tides, they came and went. Some returned decades later on specialty stations or streaming platforms. And these days, nearly everything is being tucked into quieter shores. Every so often, the tropes that once defined a series are reskinned for a new generation, which is simply how television writing evolves.
From that first wave, some re-dos leaned into long-form storytelling, while others stayed loyal to the standalone format.
The 70s offered a handful of tests, including Shazam! (1974–1976), Wonder Woman (1975–1979), and The Incredible Hulk (1977–1982). The latter proved that if you give audiences a hero they can empathize with, they will follow even an unresolved quest, like Bruce Banner’s search for a cure. Sadly, many genre series never reached a true conclusion. The Time Tunnel (1966–1967) is only one of several 60s science-fiction shows left without closure.

By Ed Sum