Married with Children1987

Al:
I've gathered you all here because I know one of you is the killer. So it must be you, Bruce.

Bruce Van Pelt:
And what do you base that on?

Al:
Absolutely nothing. Which is why the killer is you, Tonya.

Tonya Van Pelt:
Sorry, Dick. If I wanted to seal the diamond, I would have not turned the lights off. It's a well known fact that I'm afraid of the dark. When the lights went out, I was frozen in place.

Al:
Then let's reenact that moment.

[Al turns the lights off, and Tonya screams, and the lights come back on]

Tonya Van Pelt:
Who touched my breasts again?

Al:
It was me, I was checking out your story, or re-living it.

[Tonya slaps Al, who turns to Adolph standing nearby]

Al:
Which brings us to you. You grabed the butcher knife, plunged it into Colonel Van Pelt's back, and then snatched the diamond with your free hand.

Adolph Van Pelt:
One gets to meet so few true FOOLS!

[Adolph reveals that he doesn't have hands, but prostetic hooks]

Al:
Okay... so that leaves just you. Come on, Leonard. You were the criminal mastermind of this whole thing. What do you have to say about that?

Leonard Van Pelt:
[revealing to be mental retarded] Daddy?

Al:
Okay. So huh, maybe the killer really was me.