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

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

The anticipation for Abbott Elementary and It’s Always Sunny crossover episode has been building up among the fans of both ...

ABC released a huge new image gallery from the crossover event between FXX's It's Always Sunny in Philadelphia and ABC's Abbott Elementary.

TV schedule really started off perfectly with a hilarious crossover of Abbott Elementary and It’s Always Sunny in ...

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 crossover episode of two is the ultimate tribute to the city’s attitude, quirks, and, of course, its signature phrase: ...

Mark your calendars! A super exciting crossover between two of your favorite shows, ‘Abbott Elementary’ and ‘It’s Always Sunny in Philadelphia,’ is happening this coming January 8th on ABC at 8:30 PM ...

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

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 ...

Part one of the crossover episode will air at 8:30 p.m. ET on ABC. Those without cable can watch the show for free through FuboTV or DirecTV Stream each offering a free trial to new users. Sling is ...