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On Person of Interest Season 4 Episode 15, Reese tries to protect a software programmer who appears to have a second life but he can't figure out where the threat is coming from.
On Person of Interest Season 4 Episode 14, Reese talks to his department therapist while Finch suspects a juror is trying to rig a murder trial.
On Person of Interest Season 4 Episode 13, the search for Shaw takes Reese and Root to a small town that may not be as idyllic as it appears.
On Person of Interest Season 4 Episode 12, Control has questions about the methods and intentions of the Samaritan program and a report concerning vigilantes in the Northeast surfaces.
On Person of Interest Season 4 Episode 11, the team must do anything necessary to stop Samaritan before it launches a global economic catastrophe.
On Person of Interest Season 4 Episode 10, Samaritan makes a bold move by erasing crime in order to try and force the Machine out of hiding.
On Person of Interest Season 4 Episode 9, Root and Shaw disagree over how to handle a new threat from Samaritan while Reese and Finch get caught up in a gang power struggle.
On Person of Interest Season 4 Episode 8, Reese goes undercover to the police academy to keep watch over a young officer.
On Person of Interest Season 4 Episode 7, Shaw risks being detected by Samaritan while Finch and Root head off on a dangerous mission.
Finch's cover takes him to Hong Kong while a mild mannered office worker ends up posing as a detective on Person of Interest Season 4 Episode 6.