John Lithgow Sheds Lights on Arthur Mitchell, Dexter Season Finale

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Attention all other supporting actors in a drama: don't bother submitting your name for the Emmy Awards next year. John Lithgow has the category locked up.

The actor has mesmerized and frightened Dexter viewers throughout season four, culminating in the closing scene of this week's episode, where Arthur confronted Dexter at work and confirmed the latter's worst fears:

The Trinity Killer knows his identity.

Lithgow spoke with CBS' Harry Smith this week, explaining how he got the role on Dexter and offering up the tiniest clue about Sunday's season finale. (Warning: the video begins with a clip from it.)

[video url="" title="John Lithgow Interview"] [/video]

For a full clip from the season four finale, follow this article's jump - and remember to return to TV Fanatic soon after it concludes for a detailed recap and review of the shocking events!

[video url="" title="The Getaway Clip"] [/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 don't wanna step on my dick.


Sometimes partners find us, and as much as we try to push them away, they work their way into our lives, regardless - until we finally realize how much we need them.