Person of Interest - Season 4 (2014)

Reese's cover job as an NYPD detective becomes complicated when the young brother and sister he's protecting become targets of a gang investigation.

On Election Day Reese shoots a potential jumper and is forced to go into counseling. The new number is for a pollster who suspects the election for Governor of New York was rigged. It was - by Samaritan, and his life is now in danger.

John and others try to prevent a fake detective from getting himself killed, while Harold attends a conference in Hong Kong.

Shaw joins a team of international thieves in order to keep tabs on the latest POI, but an unexpected turn of events puts her in danger of being detected by Samaritan. Also, Finch and Root undertake a dangerous sabotage mission.

Reese volunteers as an NYPD police academy instructor in order to keep an eye on a talented young officer whose suspicious actions make him question her motives. Meanwhile, Martine, armed with information from Samaritan, hunts a member of the team.

Reese must save Elias from the Brotherhood. He can't get any help from Root or Shaw since Shaw's cover is blown and Root is escorting her to underground.

Samaritan demonstrates its true power by taking control of New York for 48 hours and erasing crime from the city in an attempt to lure The Machine out of hiding.

Samaritan launches a cyber-attack on the stock exchange, leaving the team with no choice but to embark on a possible suicide mission in a desperate attempt to stop a global economic catastrophe.

Control is back and begins to question the methods and intentions of Samaritan. Also, alarming news reports of a pair of vigilantes rampaging through the Northeast begin to surface.

The hunt for Shaw takes Root and Reese to a small town in upstate New York where not everything is as idyllic as it seems; Fusco and a former person of interest team up.

While on a jury for a murder trial, Finch becomes suspicious of another juror; Reese starts to open up to a therapist.

Reese tries to protect a software programmer with a mysterious second life, but it's unclear which side of her life the threat is coming from. Meanwhile, Claire, a young hacker that Finch protected, reaches out to him for aid.

Reese and Finch must protect a street-smart grifter after her plan to steal cash from a medical marijuana dispensary fails.

Reese and Finch try to protect a psychologist whose unorthodox methods for helping his patients find closure could cost him dearly. Meanwhile, flashbacks reveal Finch fragile state in days following bombing that killed his best friend, Nathan Ingram.

Reese must protect a bounty hunter who refuses to let the potential threat to her life deter her from the relentless pursuit of her target. Also, Finch tries to set the plan he began in Hong Kong in motion.

Reese and Finch scramble to protect a software CEO when his behavior becomes erratic following a hacker attack that reveals all his secrets and unravels his life.

Reese tries to honor Carter's memory by solving a cold case she was unable to.

Reese and Fusco get caught in the war between Elias and Dominic while Finch and Root follow a clue to Shaw's whereabouts.

Finch and Root race to save The Machine, which has been located by the rival AI, Samaritan.