It's Always Sunny in Philadelphia2005 | TV Show

Cast & Crew  |  Episode Guide

Seriously dark comedy about four dissolute friends, Dennis, Dee, Mac and Charlie, who run a struggling pub in Philadelphia.

Premiered: August 4, 2005

Rating: TV-MA

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Season 3, Episode 10 Mac Is a Serial Killer

First Aired: October 18, 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. Frank, meanwhile, is content to let a chainsaw do his thinking for him.

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Previous Episode

Sweet Dee's Dating a Retarded Person

Season 3, Episode 9

October 11, 2007

Next Episode

Dennis Looks Like a Registered Sex Offender

Season 3, Episode 11

October 25, 2007