Person of Interest: The Complete Series

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

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 Machine directs Reese and Finch to a former soldier with shady connections to a crime ring, Reese must infiltrate the gang, taking part in their heist. Meanwhile, Detective Carter's closer than ever to finding out who Reese is.

When the number comes up on a promising young doctor, Megan Tillman (guest star Linda Cardellini), Reese and Finch must unravel the threat while she's on-call and after hours.

When the Machine produces the social security number of a judge renowned for his tough sentencing, Reese and Finch have the added challenge of investigating a person of interest who wants nothing to do with their brand of vigilante justice.

Reese finds himself captivated by their latest Person of Interest (guest star Paige Turco), a beautiful, shrewd and remarkably resourceful woman adept at problem solving.

The Machine identifies a school teacher who witnessed a mob hit as their next POI. Now, Reese and Finch protect the unfortunate soul who was in the wrong place at the wrong time.

When Reese and Finch discover that their latest POI has connections to Cold War Soviet espionage circles, they quickly learn how covert ops were handled in a world before The Machine. Alan Dale (Lost) guest stars as the person they're tracking.

Reese and Finch's game of cat and mouse with Detective Carter becomes infinitely more complicated when The Machine declares that she is their latest Person of Interest. With Carter's life in jeopardy, they must now find a way to protect her without getting caught.

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 works the computer while Finch does the legwork with their latest target, a building superintendant who keeps too close an eye on his tenants. Meanwhile, Detective Carter may finally get a glimpse into one of their cases, so she can decide whether she wants to join the team.

It's decision time for Detective Carter. 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 and Finch's latest Person of Interest is a down-on-his-luck man (guest star Myk Watford) who may have reached his breaking point. As the case evolves, the duo calls upon a former POI for help, the resourceful and well-connected fixer Zoe (guest star Paige Turco).

The Machine identifies Darren (guest star Astro), a teenager whose brother was just murdered, as the next POI. Now, Reese must struggle to protect the teen, who's hell bent on avenging his brother's death.

Reese discovers there's more to the story after he infiltrates a smuggling ring to get close to his latest Person of Interest…who may be hiding a secret identity.

Even white collar crimes have a body count. 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. In order to get close, Reese must pose as a wealthy investor.

When The Machine spits out the number of a six-month-old baby, Reese and Finch turn into "overly protective parents" -- with an arsenal at their disposal. Meanwhile, Carter begins to question her new allegiance to Reese and Finch when Elias resurfaces.

The Machine's latest number presents a unique challenge for Reese and Finch since the person has virtually no digital footprint and appears to be leading a double life.

When The Machine spits out five numbers, naming the Don of each of New York's crime families, Reese and Finch suspect Elias is planning to eliminate his competition. As Elias takes aim, someone close to Carter may pay the price.

The Machine's latest number places Reese undercover with an armored truck crew, a case that brings back memories of his last CIA mission and painful decisions he was forced to make.

It's Reese's birthday, and Finch gives him a day off – especially when he realizes that The Machine's latest number is certain to revive painful memories.

The newest POI's curiosity could spell his doom when he finds himself embroiled in a dark government conspiracy – one that Finch is all too familiar with. Meanwhile, Reese uncovers something revealing about Finch's past.

When a psychologist’s number comes up, Reese must protect her (guest star Amy Acker) from one of her patients while eluding capture by the FBI, who are closing in fast. Meanwhile, Finch receives an unwelcome visit from an old acquaintance, on the first season finale.

With Finch missing – kidnapped by his hacker nemesis, Root (guest star Amy Acker) in last season’s finale cliffhanger – Reese enlists Detectives Carter and Fusco to join the search for his friend on the second season premiere. But can they continue without him? Meanwhile, The Machine never sleeps and issues a new number to Reese. Ken Leung (Lost) guest stars as the latest Person of Interest.

With the Machine’s help, Reese closes in on finding Finch as he uncovers shocking details of Root’s past. Delivering the number of a cold case, The Machine leads Reese ever closer to catching up with Finch and his kidnapper. Emmy® winner Margo Martindale (Justified) guest stars as a woman from Root’s past.

With Finch back in the Library, Reese returns to field work, only to face his toughest case yet – protecting the privileged daughter of a Brazilian diplomat.

Is a killer’s life worth saving? When The Machine gives Reese and Finch the number of a mob enforcer whose life becomes endangered, they must decide whether to intervene or allow karma to balance the scales of justice. Meanwhile, Finch seeks aid from an unlikely source.

Reese must protect an investigative journalist without her knowing it... or risk becoming part of her story.

Reese is out of his element when The Machine’s latest number sends him to the suburbs, forcing him to play house and go undercover in an idyllic neighborhood.

The Machine gives Finch and Reese the number of a brilliant surgeon, but they soon discover that a resourceful third party has raised the stakes for this POI, forcing them to turn to an unlikely source for help. Recurring guest star Michael Kelly appears as Agent Snow. Recurring guest star Ken Leung appears as Leon.

The team find themselves spread thin when the numbers come up for both a husband, Daniel Drake (guest star Mark Pellegrino) and his wife, Sabrina (guest star Francie Swift). Will it be “til death do us part?”

Finch and Reese’s surveillance skills are pushed to the limit when a New York City cab driver’s number comes up and any one of his passengers could be involved in the impending crime. Hundreds of passengers add up to hundreds of suspects.

While the FBI refocuses their efforts to catch “The Man in the Suit,” Reese’s latest POI becomes a personal quest after he learns that she’s the sister of a soldier who was killed in action.

Finch goes undercover as a high school substitute teacher to protect a teenage genius who reminds him of his own adolescence as a child prodigy, while Carter undertakes a dangerous mission to stop the FBI from discovering that an imprisoned Reese is the “Man in a Suit.”

While Carter plays a dangerous game by engaging in mental warfare with the FBI to help Reese evade Agent Donnelly’s narrowing focus, Reese crosses paths with foes both old and new. Meanwhile, Det. Fusco is forced to fly solo to save the team’s newest POI: supermodel Karolina Kurkova (guest starring as herself).

Has Reese become the latest Person of Interest? Caught in the crosshairs of a former acquaintance orchestrating a massive act of cyber-terrorism, Reese is abducted. Now, the team must race to save his life before it’s too late.

Reese and Finch meet their match in a tech billionaire POI whose curiosity and limitless resources threaten to expose their identities and sabotage their efforts to save his life.

Reese and Finch race to save the life of a hotel maid, Mira Dobrica (guest star Mia Maestro – Alias, Twilight Saga: Breaking Dawn Part 2), but find themselves surrounded by more suspects than they may be able to eliminate when they realize that any guest or staff member could be her potential killer. Meanwhile, Detective Carter weighs a major offer from the FBI.

Reese’s counterpart, lethal and sexy government operative Samantha Shaw (guest star Sarah Shahi), who tracks and stops terrorist threats before they occur, finds herself on the run – and the new focus of Reese and Finch’s attention. However, their pursuit proves to be their most formidable ever when they discover that her remarkably elusive skills equal their own. Creator/executive producer Jonathan Nolan directs.

After the machine gives Reese and Finch six numbers at once, their search for clues leads them to a coastal town where they are forced to ride out a storm with a group of locals in a police station. However, as the weather rages outside, a sinister situation arises inside when they realize there is an unidentified killer hiding among them.

When an elderly card sharp’s number comes up, Reese and Finch travel to Atlantic City to delve beneath the surface of their POI’s seemingly ordinary life for answers. In New York, Carter’s crusade to clear a fellow detective’s name brings her perilously close to identifying the remaining HR faction within the department.

When the number of a leading tech executive comes up, Finch infiltrates her corporation to gather intel – but can't determine whether she is working in her company's best interest or planning to destroy it from the inside. Meanwhile, Carter continues to question Detective Beecher’s (guest star Sterling K. Brown) integrity after he provides incriminating information about a fellow detective.

When a luminary in the world of medicine is poisoned, Reese and Finch have just 24 hours to determine the deadly toxin he was given and find the person behind the attack. Meanwhile, Detective Fusco’s corrupt past catches up with him when an informant gives the Internal Affairs Bureau the crucial information they need to send him to prison.

Reese and Finch realize that a virus has rendered The Machine erratic, causing it to issue numbers irregularly. As they race against the viral countdown, the team searches for a tech millionaire so elusive no one has ever seen him. Also, Detective Carter's mission to bring Cal Beecher's murderer to justice lands her squarely within the sights of the HR criminal organization.

In the second season finale, Reese and Finch team up with some surprising allies in a race to save The Machine from a familiar, nefarious entity; and the true nature of Finch's relationship with former partner Nathan Ingram is revealed. Meanwhile, Carter tries to bring Beecher's murderer to justice and finds herself at odds with the criminal organization HR.

In the third season premiere, The Machine resumes giving Finch its “irrelevant” numbers for people in danger, which include a U.S. naval officer in town for Fleet Week. However, with so many sailors flooding the streets of New York City, finding the officer in time presents an even bigger challenge for Reese and Shaw. Meanwhile, Carter has been demoted to a patrol officer as a result of her being set up by the corrupt police crime organization HR, and sets a plan in motion to eradicate them for good. Also, Root tests the boundaries of her new asylum surroundings.

The number comes up for an Internet data broker in the business of eliminating people’s privacy, but finds his own being rapidly stripped away. Reese tries to protect him as his life is being dismantled by an unknown assailant and spiraling out of control, while Finch calls on Shaw, Carter and Fusco for help in finding whoever is after him. Meanwhile, the demoted and uniformed Carter finds herself unexpectedly paired with her new rookie partner, Mike Laskey (guest star Brian Wiles).

Reese and Finch enlist the help of Carter, Shaw and Zoe Morgan (recurring guest star Paige Turco), who use their feminine wiles to bait a chameleon playboy who is either a predator or someone else’s imminent prey. Meanwhile, The Machine helps Root to plot an escape from her psych ward confinement before a dangerous enemy can track her down.

The Machine issues the number of a prominent New York lawyer whose husband was recently murdered, and the team has to quickly determine whether she orchestrated the death, or if she is being framed. Meanwhile, Carter faces an issue with her new partner, Mike Laskey, after he spots her with Reese aka “The Man in the Suit.”

When Shaw is tasked to stay close to a 10-year-old (guest star Danielle Kotch) identified by The Machine, she grudgingly develops respect for the young girl’s skills in surveillance and realizes it could be the very reason why the girl’s number has come up. Meanwhile, Carter’s mission to bring the criminal organization HR to justice risks exposure.

Freed from her psych ward confinement, Root receives a directive from The Machine that requires Shaw's assistance – by any means necessary – and takes extreme measures to gain her compliance. Also, Reese and Finch look for clues as to why a mild-mannered estate investigator’s number has come up. Kirk Acevedo (Fringe) guest stars as Timothy Sloan.

When The Machine issues the number of a hypnotherapist, the POI team discovers that he is more than just a master of the mind. Meanwhile, Carter tracks down an antiques dealer whose business is connected to the criminal HR organization.

The POI team’s war with HR nears a boiling point when 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. Meanwhile, a window into Carter’s past is seen through flashbacks with her son’s father.

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.

As the POI team seeks justice for one of its own, Finch realizes one of his team members may go one step too far, in order to end the war with HR. When The Machine singles out one of criminal organization HR’s key players, the number may be up for corrupt NYPD Officer Patrick Simmons, in the conclusion of a three-episode event.

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, HR. Camryn Manheim and Saul Rubinek guest star.

In the concluding chapter to the shocking winter cliffhanger, multiple enemies converge on the POI team as they protect a dying man whose number has come up. They struggle to keep their enemies at bay but without Reese, who has left them and their mission behind following the tragic war with HR, being down one man could have catastrophic repercussions for the team.

Just when Reese thinks he’s out, The Machine pulls him back in. Boarding an international flight in an attempt to put the team and the past behind him, Reese is angered when he realizes his travel plans have been manipulated and The Machine has other plans for him.

Reese rejoins Finch in New York, but a daring plan could make his first mission back the team’s last. When the team receives the number of a highly skilled antiquities thief, a surprising turn of events finds them planning a high-stakes heist which could land them all in jail.

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

How did Finch operate before the Man in the Suit? The secrets of his operation before he enlisted Reese are revealed, including shocking ties to present day events.

The Machine assigns Root to seek out a janitor with a mysterious past, but when her very presence puts his life in danger, Finch also receives his number.

Finch and Reese must delve into the murky waters of international politics when they are given the number of a former government contractor who is stalking a UN diplomat. Also, an enemy attempts to gain an upper hand on Root.

Reese and Shaw infiltrate their most dangerous location yet – a high school reunion, posing as alumnae in order to keep eyes on the latest POI, Matthew Reed (guest star Nestor Carbonell). Meanwhile, Finch and Fusco travel to Washington D.C. to investigate the motivations behind Vigilance’s latest attack.

Reese poses as a Secret Service agent to get close to the latest POI, a U.S. Congressman who may hold the key to derailing Decima’s plans to bring a second Machine online.

As Decima uses Samaritan’s feeds to hunt Reese and Shaw, Greer (recurring guest star JOHN NOLAN) exploits Finch’s greatest weakness – by threatening his former fiancée and love of his life, Grace Hendricks (recurring guest star Carrie Preston) – in an attempt to lure him out of hiding.

When an unknown entity prevents The Machine from seeing the full picture of an impending catastrophic event, it sends the team five separate numbers to help them piece together the bigger picture. Meanwhile, Root’s team of hackers arrives in New York.

In the third season finale, the team takes desperate actions in its race to prevent the malevolent AI program 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.

In the fourth season premiere, the team must devise new ways to continue their work without being detected by Samaritan after they’re forced to take on new identities created by Root. Some, however, find it hard to ignore the Machine’s numbers, putting them all at risk of being seen by the rival Machine.

Although Finch insists that he no longer wishes to help with new numbers, his interest is piqued when Reese learns that the newest POI is a brilliant college student engaged in a mysterious, life-and-death scavenger hunt. Now he must decide if he can help without alerting Samaritan.

Finch recruits Fusco to say close to the latest POI, a professional “wingman” whose number has come up, but learning how to approach women soon becomes the least of his worries. Meanwhile, Reese must find a way to play by the rules at his new day job as the Machine sends Finch and Root on a mysterious errand.

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.

Finch is suspicious when a gifted political pollster’s number comes up at the same time that his typically ironclad predictions go wrong – and believes that the two events are linked. Meanwhile, Reese is sidelined by a direct order from Captain Moreno. Jason Ritter guest stars as pollster Simon Lee.

Reese, Shaw and Fusco must protect an unassuming office worker who stumbles into a dangerous conspiracy while moonlighting as fake detective. Meanwhile, Finch travels to Hong Kong as part of his academic cover identity.

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. Finch and Root, meanwhile, 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 and Finch are caught in a power struggle for control of the city’s gangs when Elias (recurring guest star Enrico Colantoni) is targeted by Dominic (recurring guest star Winston Duke), the ambitious leader of the Brotherhood. Meanwhile, Root and Shaw disagree over how to handle a new threat from Samaritan

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, forcing the team to risk their lives in a desperate mission to stop a global catastrophe.

Control (recurring guest star Camryn Manheim), who oversees the handling of relevant numbers for the government, begins to question the methods and intentions of the Samaritan program. Also, alarming news reports of a pair of vigilantes rampaging through the Northeast begin to surface.

Reese and Root’s hunt for Shaw takes them to a small town in upstate New York where it becomes apparent that not everything is as idyllic as it seems. Also, Fusco teams with a former POI to tackle the newest number.

When the Machine arranged for Finch to sit on the jury of a murder trial, he begins to suspect that a fellow juror is set to rig the proceedings. Meanwhile, Reese begins to open up to the department’s 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 (recurring guest star Quinn Shephard), a young hacker who Finch tired to protect from Samaritan, reaches out to him for help.

Reese and Finch must protect Harper (guest star Annie Ilonzeh), a street-smart grifter, when her plan to steal cash from a medical marijuana dispensary goes up in smoke. How many enemies can one person make?

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’s fragile state in the days following the bombing that killed his best friend, Nathan Ingram.

Reese tries to 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 in motion that he began in Hong Kong.

Reese and Finch scramble to protect a software CEO (guest star Aasif Mandvi) when his behavior becomes increasingly erratic, following a hacker attack that reveals all his secrets and unravels his life.

Reese finds himself on a perilous personal journey when he takes it upon himself to honor Detective Carter’s memory by attempting to solve a cold homicide case she was never able to close.

Reese and Fusco get caught in the war between the two newest POIs, rival crime bosses Elias and Dominic. Also, a tantalizing clue to Shaw’s whereabouts leads Finch and Root into a possible trap; and Control goes rogue to uncover the true intentions of the Samaritan program.

In the Season Four finale, Finch and Root race to save The Machine, which has been located by its AI rival, Samaritan. Also, Reese is caught in the middle of the final showdown between rival crime bosses Elias and Dominic.

In the fifth and final season premiere, Reese and Finch attempt to rescue the Machine’s source code before it deteriorates beyond repair. Also, Root fights for her life against an onslaught of Samaritan’s agents and Fusco is faced with hard questions following the deaths of Dominic and Elias.

The Machine experiences a glitch upon rebooting, supplying Reese and Fusco with the numbers of dozens of people not actually involved in crimes, while also locking Finch and Root out after identifying them as threats based on their past violent behavior.

Reese’s cover could be blown when he realizes that the latest POI has a connection to his old colleagues in the CIA.

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

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

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 take it upon himself to investigate string of missing person reports.

Root goes undercover at a radio station to protect the host of a conspiracy theory show who may have stumbled on information that someone is willing to kill to keep secret. Also, Samaritan’s agents try to convince a member of the team that their goals are noble.

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

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

Finch’s number comes up when a fatal error blows his cover identity and sets off a series of escalating encounters with Samaritan’s operatives, on the 100th episode.

The team must unravel a conspiracy and stay ahead of the Secret Service when the President of the United States (guest star Joel Haberli) becomes their newest POI. Also, Finch separates himself from the team and considers taking drastic action to combat Samaritan.

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.

In the series finale, the POI Team – Finch, Reese, Fusco and Shaw – embark on one final mission to prevent Samaritan from destroying The Machine and cementing its hold over mankind.