Finch, Reese, Fusco and Shaw embark on one last mission to prevent Samaritan from destroying The Machine and cementing its hold over mankind.

As Reese and Shaw race to catch up with Finch, he infiltrates a maximum-security government facility in a desperate mission which could mean the end for not only Samaritan, but for himself and The Machine as well.

Finch's number comes up when a fatal error blows his cover identity and sets off a deadly series of escalating encounters with Samaritan's operatives.

The mysterious criminal mastermind known as "The Voice" returns and traps Reese and Fusco in their own precinct with several armed gang members and the latest POI. Also, Root makes a shocking discovery.

Reese and Finch become trapped in a hospital that becomes ground zero for a deadly viral outbreak. Also, Samaritan's newest recruit has second thoughts and Shaw continues to struggle with reality.

Root goes undercover at a radio station to protect the host of a conspiracy theory show who stumbles upon information that could get him killed. Also, Samaritan's agents try to convince a member of the team that their goals are noble.

The Machine sends Reese and Finch to a wedding to protect a pair of POIs before their nuptials. Also, Fusco becomes angry at being kept in the dark by the team and takes it upon himself to investigate a string of missing person reports.

Reese protects an NYPD analyst whose investigation into a software glitch has drawn the attention of Samaritan. Also, Reese and Fusco are threatened by an ally of Elias's, who is looking to avenge his friend's death.

Shaw escapes her captors, but the team is unsure of her mental state when she begins to act paranoid and reckless.

Reese's cover could be blown when he realizes the latest POI has ties to his old CIA colleague, Kara Stanton.

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

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

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

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 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 Shanghai in motion.

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 ...

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

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.

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

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.

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.

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.

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.

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.

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 ...

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.

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

While Reese is forced to go to counseling for his violent tendencies, Shaw, Root and Finch try to help a new POI.

The next numbers the Machine provides are for fourteen-year-old Malcolm Booker, and his eight-year-old sister, Tracie Booker, who are in foster care as their mother is incarcerated on a ...

Finch recruits Fusco to stick close to the latest POI, a professional "wingman", but learning how to approach women soon becomes the least of his worries. Meanwhile, Reese must find a way ...

Harold reluctantly agrees to help John protect a young woman who is participating in a dangerous and deadly game, meanwhile Shaw works with a group of thieves as her new cover identity.

Required to assume new identities created by Root, the team tries to adapt to their new lives, but a new number complicates things.

The team takes desperate action in its race to prevent Samaritan from coming online and making them its first targets. Meanwhile, the months-long battle with the anti-surveillance terrorist group Vigilance comes to a shocking conclusion.

Decima has completed its beta test of Samaritan and has now shut it down temporarily as Greer has to get the politicos, namely Garrison, to buy into the need to purchase it in the name of ...

Decima hunts down Reese and Shaw using Samaritan's feeds. Meanwhile, Greer sets a trap for Finch by targeting his former fiancée, Grace.

News of Northern Lights has hit the media, meaning that the team's work has become more difficult if only because of the public eye on what is happening. While Shaw heads off with Root on ...

Reese, Shaw and Finch are too late for their latest number, Leona Wainwright, as she is killed in front of Reese and Shaw's eyes. They know that Leona was killed by Vigilance for ...

The team gets involved in a case of international politics when a former government contractor stalks a U.N. diplomat. Meanwhile, an adversary tries to take advantage of Root.

The Machine tasks Root to find a janitor who has a mysterious past. However, when her presence endangers him, the Machine sends his number to Finch as well.

Some of the secrets of Finch's operation before he enlisted the help of Reese are about to be revealed, it will also include some shocking ties to some of the stuff that has happened in present-day events.

Finch goes undercover in an emergency call center to protect a 911 operator, but it soon becomes clear that the threat reaches further than the team could have anticipated.

Reese rejoins Finch in New York, but when the team receives the number of a highly skilled antiquities thief, a surprising turn of events finds them planning a heist which could land them all in jail.

Under the assumed name John Wiley, Reese is making his escape from his life with Finch and the Machine by taking a one-way flight to Istanbul. He is however diverted onto another flight via...

Finch, Shaw and Arthur Claypool are able to escape from the clutches of Control, after which Arthur demonstrates that he has more lucid moments than he initially lets on. He informs Finch ...

Flashbacks to Finch's adolescence provide insight into his creation of The Machine. Also, the team receives the number of an already dying man, and Reese leaves the POI team behind in the aftermath of the war with the crime organization.

The team seeks justice for Carter's murder, but Finch realizes that one person may go too far in the battle against HR. Meanwhile, NYPD officer Patrick Simmons' number comes up.

Danger closes in when the epic battle to bring the criminal organization HR to justice reaches new heights. And when the Machine suddenly gives out Reese's number, the POI team faces their greatest threat yet.

Finch receives 38 numbers at once from the Machine. He discovers they are connected to an unknown player who is inciting an all-out war between the crime organization and the Russian mob.

While Finch still keeps Root hostage, he who can't understand why the Machine is in contact with her, he is the first to make contact with their latest number, that of hypnotherapist Hayden...

Reese and Finch go on separate missions. Finch has noticed that Shaw has been less responsive than she even usually is and he sends Reese to go find her. Reese initially discovers evidence ...

Shaw is tasked to stay close to a 10-year-old identified by The Machine, who is wanted by the Russians. Meanwhile, Carter's mission to bring HR to justice risks exposure.

The next number the machine dispenses is for Vanessa Watkins, a hard-nosed prosecuting attorney who, when Finch and Reese first meet her, has just reported her husband, Jeremy Watkins, ...

The next number the machine dispenses is for Ian Murphy, a young man who lives off his investments. Years earlier he was a struggling college student who inherited $100,000 which he now has...

The next number the machine dispenses is for Wayne Kruger, an Internet genius and head of a company called Life Trace, which allows people to find others through information readily ...

Nobody knows where the Machine has now relocated itself, but it is still in contact with both Finch and, by association, Reese and their new partner Shaw, as well as Root. Still ...

Reese and Finch team up with surprising allies in a race to save The Machine from Root and the mysterious international organization, Decima, who have both re-emerged with dangerous agendas.

It's been ten days since the machine has provided a number, which means Carter has had ten days of dead bodies piling up. Finch discovers that a company called Decima is responsible for the...

Reese first catches up with the latest number, Dr. Richard Nelson, when he is being awarded the title of professor emeritus at a lavish dinner banquet. Dr. Nelson is a well respected and ...

The next number the machine dispenses is for Monica Jacobs, a senior vice-president with Rylatech, a computer networking firm. Monica is highly regarded as a rising star in the business. ...

Reese and Finch head to Atlantic City for their next number, that belonging to Lou Mitchell, an irascible, widowed and retired watch repairman, who, like many of his age, has a small ...

Coinciding with a storm hitting the eastern tri-state area which may require evacuation of coastal residents, the machine has not provided any numbers in three days, leading Reese and Finch...

Sam Shaw and her associate Michael Cole recieve the relevant numbers from the machine, but Reese and Finch must help them, before is too late.

Reese and Finch get jobs as a bellhop and concierge respectively at the upscale, 700 guest Coronet Hotel where the next number, Mira Dobrica, works as a maid. They figure that whatever will...

The next number Reese and Finch work on is that of Logan Pierce, a self-made billionaire, whose social networking website, friendczar.com, which he founded and still operates with his best ...

As Donnelly escorts Carter and Reese to their incarceration, they are ambushed, their attacker who kills Donnelly and abducts Reese. That attacker is Reese's old and supposedly deceased ...

Finch and Carter are trying to get Reese out of Riker's, where he is still being kept prisoner by Donnelly. Meanwhile, Fusco is working alone in the next number.

Special Agent Donnelly has Reese, along with three other men, in seventy-two hour custody on Riker's Island. With Finch's help, Carter is in unofficial charge of helping Reese get out of ...

Reese and Finch's latest number is twenty-six year old Abby Monroe, who they expect will be the target based on basic information they have about her. She is a past honor student having ...

Reese and Finch's next number may be their most difficult to date if only because there is not on the surface any clear indication who he may be a target of or who he may be targeting, and ...

The machine unusually dispenses two numbers simultaneously belonging to husband and wife, Daniel and Sabrina Drake, who own their own small but lucrative publishing firm. Their marriage is ...

The latest number the machine dispenses belongs to heart surgeon, Dr. Madeleine Enright, known as the best in her field. That is why wealthy businessman Oliver Veldt chooses her for his ...

Reese is out of his element with their next number belonging to Graham Wyler, a seemingly straight laced family man who lives and owns his own small hardware store in suburban Far Rockaway,...

Protecting the latest number that the machine dispenses will be difficult for Reese and Finch because of the large number of potential perpetrators of the crime due to the enemies she's ...

Reese and Finch are pretty certain that the person associated with the next number dispensed by the machine is going to be the perpetrator of the upcoming crime. He is mob enforcer Riley ...

Finch's recent abduction and captivity by Root has affected his psyche, which may or may not be helped by adjusting to life with his new roommate. Despite Finch's problems, the machine ...

While Reese leaves his newly acquired dog, Bear, with Fusco who will continue to investigate Alicia Corwin's death in New York, Reese and Carter head to Bishop, Texas to follow a lead about...

Reese is feeling at a loss with Finch having been kidnapped by Root aka Caroline Turing, the woman who the machine had identified as a person of interest, but who had set the machine up so ...

Reese is trapped next to a person of interest in a part of the city extremely controlled and needs the help of Finch, Fusco and Carter.

Before the start of their next case, Reese, based on what he sees or more precisely doesn't see, is more curious about how the numbers from the machine make their way to Finch. That next ...

Because it's Reese's birthday and because there are no new numbers, Finch gives Reese the day off. However, there is a new number that Finch believes would not be a good case for Reese to ...

With some hesitancy, Carter re-enters life with Reese and Finch, in part because she feels her police work may be in jeopardy since she doesn't know who in the force she can trust, with ...

The machine dispenses five numbers belonging to the five biggest Italian mafia bosses in the city, including Moretti's son and Elias' half brother, Gianni Moretti, Jr. Reese and Finch ...

Carter, disapproving of Reese's methods, still is not accepting his or Finch's calls. She receives a visit that provides yet another perspective on Reese's possible life. Without Carter's ...

In an on-going case, Reese accompanies Carter when mob boss and Elias' father Gianni Moretti is released from prison. Carter wants to offer Moretti police protection as they are all aware ...

The Machine leads Reese and Finch to Wall Street when a sharp young trader at a major investment bank becomes embroiled in a multi-million dollar financial scam.

Reese discovers there's more to the story after he infiltrates a smuggling ring to get close to his latest POI.

The Machine identifies Darren, a teenager whose brother was just murdered, as the next POI. Meanwhile, Finch is growing concerned that the son of his former business partner is dangerously close to finding out about The Machine.

The next number the machine dispenses is that of Scott Powell, who is seemingly undistinguished from the many in the working middle class. He works as a construction projects manager for ...

When Carter finally comes face-to-face with Reese, he urges her to join forces to help with their latest POI, a scrappy young woman from the wrong side of the tracks who turned her life around and became a lawyer.

Reese works the computer while Finch does the legwork with their latest POI, a building super who keeps too close an eye on his tenants. Meanwhile, Detective Carter may finally get her long-awaited glimpse into a case.

As Detective Carter deals with the fallout from her recent encounter with Reese and Finch, The Machine ups the ante for the duo by giving them four Social Security numbers instead of one.

Reese and Finch's game of cat and mouse with Detective Carter becomes infinitely more complicated when The Machine declares that she is their newest POI.

The next number that the machine spews out is that of Wallace Negel, an ex-German national who emigrated to the United States in 1980. However, they learn that Negel has not made any ...

The Machine identifies a school teacher who witnessed a mob hit as their next POI and Reese and Finch rush to save his life.

Reese is able to track his and Finch's next case, a woman named Zoe Morgan, when she uses his vehicle for hire service. In watching her as he drops her off from place to place, Reese learns...

The next case for Reese and Finch is that of Judge Samuel Gates, a recent widower with a son, Sam Gates Jr. whose nanny, Christina, has been a valued member of the family since Judge Gates'...

Reese and Finch surveil their latest POI, Dr. Megan Tillman, while she's on call and after hours to unravel the threat surrounding the promising young physician.

Joey Durban, a just returned veteran of Afghanistan conflict, is the next case for Reese and Finch. On the surface, Joey seems to be just another vet trying to adjust to civilian life, ...

When they are given the Social Security number of a teenager who was killed two years ago, Reese and Finch begin to question the infallibility of The Machine. Meanwhile, Finch flashes back to The Machine's origin and how it was developed.

When the social security number of a young prosecutor comes up, Reese and Finch work together to figure out if their person of interest is the victim or perpetrator.