Sequel, spinoff, or franchise TV shows sharing a universe with an established series virtually guarantee a critical mass of viewers, but they rarely do justice to what came before them. Few shared universes on the small screen can claim to have given rise only to televisual masterpieces.

Since the primary motivation for TV production companies to expand a franchise isn’t necessarily artistic achievement, it’s often the case that the quality falls off when it comes to sequels and spinoffs. Some TV franchises even break canon or pepper their universes with plot holes in the process of developing follow-up series.

What’s more, even the best TV shared universes can include one dud show, such is the challenge of getting a fictional story-world right every time. However, the shared u

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