Dexter Sneak Peeks: "Lost Boys"

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Maybe they should call him the Quartet Killer?

On this week's new episode of Dexter - which follows one of the best hours in the show's history - Dexter discovers something new about Arthur Mitchell.

We gave most of it away above, but the following trailer doesn't reveal any major spoilers. It just gets us excited for 9 p.m. this Sunday night...

[video url="http://www.tvfanatic.com/videos/lost-boys-promo/" title="Lost Boys Promo"] [/video]

Is this sneak peek not enough? Follow this article's jump for two clips from "Lost Boys."

[video url="http://www.tvfanatic.com/videos/lost-boys-clip/" title="Lost Boys Clip"] [/video]

[video url="http://www.tvfanatic.com/videos/at-the-doctor/" title="At the Doctor"] [/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.

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Dexter Quotes

I've lived in darkness a long time. Over the years, my eyes adjusted until the dark became my world and I could see. But then Rudy turned on the light. He flooded my memory and now I'm blind.

Dexter Morgan

Tonight's the night. And it's going to happen again, and again. It has to happen. Nice night.

Dexter Morgan