Note: The following story contains spoilers from "Abbott Elementary" Season 4, Episode 9. When "Abbott Elementary" creator ...

Charlie Kelly can finally read this sentence. Probably. In Wednesday night’s Abbott Elementary and It’s Always Sunny in ...

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

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

Here's a look at our real-time thoughts on tonight's crossover between FXX's It's Always Sunny in Philadelphia and ABC's ...

Could the crossover between It's Always Sunny in Philadelphia and Abbott Elementary be a major game-changer for Charlie Kelly ...