It's Always Sunny in Philadelphia Season 4
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.
Genre: Comedy
Actor: Charlie Day, Danny DeVito, Glenn Howerton, Kaitlin Olson, Rob McElhenneyDirector: Fred Savage
Country: United States