A few days before sharing that pic from the final day of Season 1's production, Kaitlin Olson revealed an easter egg for fans ...

ABC's "Abbott Elementary" and FX's "It's Always Sunny in Philadelphia" are indeed plotting a crossover episode.

Fans of ‘Abbott Elementary’ and ‘It’s Always Sunny in Philadelphia’ are finally getting the crossover episode they’ve desired ...

Abbott Elementary is crossing paths with It’s Always Sunny in Philadelphia. The creative minds behind the two comedy series ...

The two Philadelphia-based worlds will combine in a unique crossover episode next year. Abbott Elementary and It’s Always ...

Philadelphia-based shows "Abbot Elementary" and "It's Always Sunny in Philadelphia" teased a crossover episode on social ...

“Abbott Elementary” star and creator, Quinta Brunson, and “It’s Always Sunny in Philadelphia” star and co-creator. Rob ...

The rumored "Abbott Elementary" and "It's Always Sunny in Philadelphia" crossover episode appears to be happening ...

In a recent Instagram post, creator and star of Abbott Elementary Quinta Brunson posed with It's Always Sunny in Philadelphia ...

We’re also wondering if the Abbott cast will return the favor when It’s Always Sunny in Philadelphia ’s 17th season starts ...

The ABC series will crossover with FX’s It’s Always Sunny in Philadelphia for Season 4. Rob McElhenney, Danny Devito and ...