It's Always Sunny in Philadelphia: Mac Is a Serial Killer

  • Release year: 2007
Mac has been acting strangely, leading Frank, Dennis and Dee to believe that he's the serial killer who has been terrorizing Philadelphia. So they set out to catch him, but for Dennis and Dee, that means they must first learn to think like serial killers themselves.read more
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Mac has been acting strangely, leading Frank, Dennis and Dee to believe that he's the serial killer who has been terrorizing Philadelphia. So they set out to catch him, but for Dennis and Dee, that means they must first learn to think like serial killers themselves. Frank, meanwhile, is content to let a chainsaw do his thinking for him.

Original Release

10/18/2007

US Release

10/18/2007

Cast

(see additional cast & crew)

Directors

Jerry Levine

Writers

Glenn Howerton, David Hornsby, Charlie Day, Lisa Parsons, Rob McElhenney

Creators

Rob McElhenney

Cast

Producers

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