Kaitlin Olson may always be married to the hit sitcom It's Always Sunny in Philadelphia (in some ways quite literally, with ...

The Abbott Elementary & It's Always Sunny In Philadelphia crossover had hilarious character interactions, but it hid callbacks in its witty writing.

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 Abbott Elementary.

Janine and Dee have a bonding moment in this sneak peek at the It's Always Sunny in Philadelphia/Abbott Elementary crossover event.

Kaitlin Olson is a familiar face to fans of a raucous sitcom It’s Always Sunny in Philadelphia, having played self-centered ...

Here's some background and inside jokes to help fill in some of the gaps for viewers who don't watch both Philly-based shows.

The cast of "It's Always Sunny in Philadelphia" will appear on "Abbott Elementary" tonight. Here's how to watch, when it airs and what to know about the crossover.

This matchup brought together two Philly casts: “Abbott Elementary” and “It’s Always Sunny in Philadelphia.” The crossover ...

ABC has revealed the first promo for the 'Abbott Elementary' and 'It's Always Sunny in Philadelphia ... as Kaitlin Olson’s Dee Reynolds responds, “Is that what this is?” ...