After much anticipation, the unlikely meeting of the two worlds unfolded on Wednesday's installment of "Abbott Elementary." ...

The Abbott Elementary & It's Always Sunny In Philadelphia crossover was a hit, but Glenn Howerton’s Dennis was mysteriously ...

The star of the FX series also admits he was initially hesitant about the crossover concept as 'It's Always Sunny in ...

As of Jan. 9, the episode is available to stream on Hulu. The second crossover is expected to be an episode of "It's Always Sunny in Philadelphia," which has aired on FXX since 2013.

Charlie learns to read, Dee impersonates Ben Franklin, and Frank fights raccoons. We don't quite know what's up with Dennis though.

The "Abbott Elementary" and "It's Always Sunny in Philadelphia" crossover episode aired Wednesday, bringing together two completely different Philly sitcom casts for an epic explosion of "Go Birds ...

The cast of It’s Always Sunny in Philadelphia made its way to the ABC show, which is set in Philly, for the crossover episode of comedy writers’ dreams. The brief promo for the Jan. 8 ...

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Therefore, eventually, we will see the other half of this marvelous crossover. Until then, I’ll be theorizing about the ...

In the newest Abbott episode, "Volunteers," The Gang gets educated. The Abbott Elementary/It’s Always Sunny in Philadelphia Crossover Brought Out the Weirdest of Both ...

The “It’s Always Sunny in Philadelphia” crew is headed to “Abbott Elementary” in the first of two crossover episodes. The highly anticipated crossover episode will see Charlie (Charlie ...

A new “Abbott Elementary” episode brings volunteers from “It’s Always Sunny in Philadelphia.” The crossover episode airs Wednesday, Jan. 8, at 8:30 p.m. ET on ABC.