It's Always Sunny in Philadelphia : The TV Series present its latest episode "Mac and Dennis" is realesed on 12 November, 2009.

Director : Fred Savage
Writter : Rob McElhenney, Glenn Howerton
TV Series : It's Always Sunny in Philadelphia
Title : Mac and Dennis
Starring : Charlie Day, Glenn Howerton, Rob McElhenney, Kaitlin Olson, Danny DeVito, John Ponzio, Ara Anton, Shaun Paul Costello
Genre : Comedy
Air Date :12 November, 2009
More Information : IMDB, TV.COM

It's Always Sunny in Philadelphia Season 5 Episode 9 Synopsis :

Taking the advice seriously Dee, Mac and Dennis decides they are too co-dependent on each other, and the need to spend time together. Meanwhile, Charlie and Frank Dee helps out with a big cat problem in her apartment.