Person of Interest Season 4: First Look!

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The Person of Interest world has changed.

So states a mystery woman portrayed by Cara Buono in the first sneak preview for Season 4 of the CBS drama, as revealed this weekend at Comic-Con.

The former Mad Men actress and Fred Weller both make their first appearances in the following video, which also takes fans back through Person of Interest Season 3.

In new footage, we see Sam and Root lying low in a chic department store, along with Elias looking displeased to see Reese again and Root warning Harold that a war is at hand, “so pick a side.”

Watch now:

Person of Interest Season 4 premieres Tuesday, September 23 at 10/9c.

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

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Person of Interest Quotes

Knowledge is not my problem. Doing something with that knowledge is where you come in. You can call me Mr. Finch.

Finch

When you find that one person who connects you to the world, you become someone different, someone better. When that person is taken from you, what do you become then?

Reese