All episodes Season 3 S03E10 2007-10-18 30 min 2000s FX

It's Always Sunny in Philadelphia

Mac is a Serial Killer

TV Flash files “Mac is a Serial Killer” as hour 27 of 181 in the TV Flash guide — It's Always Sunny in Philadelphia (2005–present) on FX, season 3, episode 10, aired 2007-10-18, 30 min.

From the desk

How this hour is filed

This leaf is S03E10: listed hour 27 of 181 in the It's Always Sunny in Philadelphia guide, hour 10 of 15 in season 3. It aired 2007-10-18 (30 min). The listed hour before it is “Sweet Dee's Dating a Retarded Person” (S03E09). Next is “Dennis Looks Like a Registered Sex Offender” (S03E11).

It's Always Sunny in Philadelphia — Mac is a Serial Killer (S03E10)

Catalog log

Broadcast listing — not a TV Flash recap.

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.

Viewer FAQ

Where does Mac is a Serial Killer sit in the It's Always Sunny in Philadelphia guide?

S03E10 is listed hour 27 of 181 — hour 10 of 15 in season 3, season 3 episode 10.

When did It's Always Sunny in Philadelphia S03E10 air?

Mac is a Serial Killer aired 2007-10-18 and is listed at 30 minutes.

Do I have to start at season one of Always Sunny?

You can. You can also jump mid-run: the Gang is fractal terrible, and the format stays viciously inventive for a long haul.

In the series

Why this series still plays

Five terrible people, infinite schemes: Charlie, Dennis, Mac, Dee, and Frank reinvent cruelty without redemption as comfort. Rob McElhenney's FX comedy made trash humans into comic purity and then outlasted almost every live-action sitcom. The anti-Friends on purpose — fractal terrible, still formally inventive.

August 4, 2005, FX drops a dive-bar sitcom that would still be extending its season count while the rest of live-action comedy got windowed, buried, or turned into a nostalgia panel. Rob McElhenney's *It's Always Sunny in Philadelphia* — later FXX — is five terrible people, infinite schemes, the anti-*Friends* on purpose. Charlie Day, Glenn Howerton's Dennis, McElhenney's Mac, Kaitlin Olson's Dee, and **Danny DeVito from season two**, the mid-stream casting masterstroke that completes The Gang. Extreme premises,…

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Also in season 3

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