Details
The fourth season of It's Always Sunny in Philadelphia, premiered on FX on September 18, 2008. The season contains 13 episodes and concluded airing on November 20, 2008.
- Comedy
- English
Cast & Crew
- Charlie Day , Glenn Howerton , Rob McElhenney , Kaitlin Olson , Danny DeVito
- Rob McElhenney
- Fred Savage, Charlie Day, Glenn Howerton, Rob McElhenney, Michael Rotenberg