Christine: I don't know who my father is.
Angel: He is the Trinity Killer, and he's been sending you postcards from Hell!

If I can make the police think the Trinity Killer is someone else, Arthur is all mine.

What kind of man witnesses a child abduction and doesn't call the police? Who are you, Kyle?

Arthur

Deb: Where you off to?
Dexter: Kill a guy you're looking for. Save a kid. Remember to pick up diapers.

Ever hear of a comb? Looks like you have a cat on your head.

Deb

Dexter: He's never taken a child before.
Harry: That you know of. If this is new, it's on you.

I know that look. I'm not the only one on a stalk.

Deb: You can make anything sound perverted.
Vince: It's a gift.

I've almost banged so much tail at those geek fests.

Vince

We share everything. Not in a gay way.

Vince

Trinity: Confession is good for the soul.
Dexter: All the more proof I have no soul.

Scheduling my activities around her Downward Facing Dog could prove challenging.

Dexter Season 4 Quotes

There's this cliche when serial killers are always described as quiet, kind of a loner... it's a cliche for a reason.

Dexter

Wanna know a secret? Daddy kills people.

Dexter