Originally, Danny DeVito and William Sanford Davis' characters were supposed to know each other from high school, with each ...

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 ...

The two sitcoms could hardly be more tonally different, but this week’s crossover episode of “Abbott” was relatively seamless ...

A new “Abbott Elementary” episode brings volunteers from “It’s Always Sunny in Philadelphia.” The crossover episode airs ...

Philly pride runs strong, even for celebrities. The Welcome to Wrexham creator and Bradley Cooper are not the only famous ...

As trouble comes to Abbott Elementary, Kaitlin Olson is providing a cheat sheet for fans curious about It’s Always Sunny in ...

Court-ordered community service, urine-soaked animal pelts, and a Billy Madison homage: How It’s Always Sunny infiltrated ...

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

In true TV crossover fashion, everyone learns a lesson when the It's Always Sunny in Philadelphia gang visits Abbott Elementary.

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