PERSON OF INTEREST Season 1 Episode 13 Root Cause Photos : “Root Cause” — Reese and Finch’s (Michael Emerson) latest POI is a down-on-his-luck man who may have reached his breaking point. As the case evolves, the duo calls upon a former POI for help, the resourceful and well-connected Zoe (Paige Turco), on PERSON OF INTEREST, Thursday, Feb. 2 (9:00-10:00 PM, ET/PT) on the CBS Television Network.

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