It's Always Sunny in Philadelphia The Nightman Cometh (TV Episode 2008) - IMDb

The Nightman Cometh: Dirigido por Matt Shakman. Com Charlie Day, Glenn Howerton, Rob McElhenney, Kaitlin Olson. Charlie stages a rock opera based on his song "Nightman," and recruits the rest of the gang to help him with it.

Charlie Day Was The Musical Force Behind It's Always Sunny's The Nightman Cometh - IMDb

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It's Always Sunny in Philadelphia The Nightman Cometh (TV Episode 2008) - IMDb

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The Nightman Cometh

Just noticed this cute little It's Always Sunny in Philadelphia reference! : r/BobsBurgers