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Person of Interest

"Beta" -- As Decima uses Samaritan's feeds to hunt Reese and Shaw, Greer exploits Finch's greatest weakness in an attempt to lure him out of hiding: his love for his former fiancée, Grace Hendricks, on PERSON OF INTEREST, Tuesday, April 29 (10:01-11:00 PM, ET/PT) on the CBS Television Network. Pictured: Carrie Preston Photo: John Paul Filo/CBS

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