A Look at Television Crossover Episodes, Where Two or More Shows Exist in the Same Fictional Universe

Episode 3 of “Vulture’s Secret History of Television” takes a look at television crossover episodes, where two or more shows exist in the same fictional universe.

Are two shows (or three, or four, or five) better than one? Since at least the 1960s, TV studios have experimented with crossovers between series. In this week’s episode of “Vulture’s Secret History of Television,” we look at the ones that worked, the ones that didn’t, and the ones that had truly bizarre premises.