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It's Always Sunny in Philadelphia

S3E10 — Mac is a Serial Killer

I got hard evidence. I got a confession from his mother.

- I just realized something. - What?

Yes. Oh, my God. Dee, the real serial killer is Mac.

(gasps) That's what I just said.

It's Always Sunny in Philadelphia
Season 3, Episode 10
Mac is a Serial Killer
Image #289

- I know who the killer is. - You do?

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I got hard evidence. I got a confession from his mother.

- I just realized something. - What?

- I know who the killer is. - You do?

Yes. Oh, my God. Dee, the real serial killer is Mac.

(gasps) That's what I just said.