Season 3 Episode 21 episode 21

Person of Interest Season 3 Episode 21 "Beta" Guide

Person of Interest Season 3 Episode 21 "Beta" Guide

Carrie Preston returns as Decima threatens Grace to get to Finch in Person of Interest Season 3 Episode 21, "Beta," airing April 29. CBS has released the official spoiler guide.

FINCH’S GREATEST FEARS ARE REALIZED AS DECIMA THREATENS THE LOVE OF HIS LIFE IN ORDER TO LURE HIM OUT OF HIDING

  • 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