Frank's Back in Business It's Always Sunny in Philadelphia : Season 8 Episode 7
TV-MA FXX 22m
Aired: November 29th, 2012 @ 10:00 PM EST on FXX
With Charlie under his wing, Frank cleans up so he can get his hands dirty and help out his old company with one last big merger. An unwritten rule of the bar gets the rest of the gang caught up in a case of mistaken identity.
