Person of Interest Wiki
Person of Interest Wiki
← Season 3 Person of InterestSeason 4 (Flashbacks in parentheses) Season 5 →
401Panopticon 409The Devil You Know 417Karma” (Finch)
402Nautilus 410The Cold War” (Greer) 418Skip
403Wingman 411If-Then-Else” (The Machine) 419Search and Destroy
404Brotherhood 412Control-Alt-Delete 420Terra Incognita” (Reese)
405Prophets” (Finch) 413M.I.A. 421Asylum
406Pretenders 414Guilty 422YHWH
407Honor Among Thieves 415Q&A
408Point of Origin 416Blunt
Season 4

POI - S4 Promo Poster.jpg



Air dateSeptember 23, 2014 -
May 5, 2015



StarringJim Caviezel as John Reese
Michael Emerson as Harold Finch
Kevin Chapman as Lionel Fusco
Sarah Shahi as Sameen Shaw
Amy Acker as Root

Season 4 of Person of Interest is the fourth season of the series.

Season Plotlines


Main Cast

Recurring Cast

In alphabetical order:


# Image Title Airdate Writer(s) Director
401 Panopticon.png Panopticon September 23, 2014 Erik Mountain
Greg Plageman
Richard J. Lewis
Forced to take on new identities created by Root, the team tries to adapt to their new lives. However, some find it hard to ignore The Machine’s numbers, which puts them all at risk of being detected by Samaritan.
402 4x02 - Nautilus.png Nautilus September 30, 2014 Melissa Scrivner-Love
Dan Dietz
Chris Fisher
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.
403 Wingman.png Wingman October 7, 2014 Amanda Segel Frederick E.O. Toye
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 to play by the rules at his new day job as the Machine sends Finch and Root on a mysterious errand.
404 POI 0404 Main1.png Brotherhood October 14, 2014 Denise Thé Chris Fisher
Reese's cover job as a detective at the NYPD becomes complicated when the young brother and sister he's protecting become targets of a gang investigation.
405 4x05 - Prophets.png Prophets October 21, 2014 Lucas O'Connor Kenneth Fink
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.
406 4x06 - Pretenders.png Pretenders October 28, 2014 Ashley Gable Stephen Surjik
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.
407 POI 0407 Main.png Honor Among Thieves November 11, 2014 David Slack Sylvain White
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.
408 4x08 - Point of Origin.png Point of Origin November 18, 2014 Tony Camerino Richard J. Lewis
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.
409 4x09 - The Devil You Know.png The Devil You Know November 25, 2014 Erik Mountain Richard J. Lewis
Reese and Finch are caught in a power struggle for control of the city’s gangs when Elias is targeted by Dominic, the ambitious leader of The Brotherhood. Meanwhile, Root and Shaw disagree over how to handle a new threat from Samaritan.
410 4x10 - The Cold War.png The Cold War December 16, 2014 Amanda Segel Michael Offer
Samaritan shows its power by erasing crime from the city for a day in an attempt to force the Machine out of hiding.
411 4x11 - If Then Else.png If-Then-Else January 6, 2015 Denise Thé Chris Fisher
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.
412 4x12 - Ctrl-Alt-Del.png Control-Alt-Delete January 13, 2015 Andy Callahan Stephen Surjik
Control, 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.
413 4x13 - MIA.png M.I.A. February 3, 2015 Lucas O'Connor Kevin Bray
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.
414 4x14 - Guilty.png Guilty February 10, 2015 David Slack Kate Woods
When the Machine arranges 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.
415 4x15 - Q&A.jpg Q&A February 17, 2015 Dan Dietz Stephen Semel
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 who Finch tried to protect from Samaritan, reaches out to him for aid.
416 4x16 - Blunt.png Blunt February 24, 2015 Amanda Segel
Greg Plageman
Frederick E.O. Toye
Reese and Finch must protect Harper, a street-smart grifter, when her plan to steal cash from a medical marijuana dispensary goes up in smoke.
417 POI 0417 Shane Edwards 2.png Karma March 10, 2015 Hillary Benefiel
Sabir Pirzada
Chris Fisher
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.
418 4x18 - Skip.PNG Skip March 24, 2015 Ashley Gable Helen Shaver
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.
419 4x19 - Search and Destroy.png Search and Destroy April 7, 2015 Zak Schwartz Stephen Surjik
Reese and Finch scramble to protect a software CEO when his behavior becomes increasingly erratic following a hacker attack that reveals all his secrets and unravels his life.
420 4x20 - Terra Incognita.PNG Terra Incognita April 14, 2015 Melissa Scrivner-Love
Erik Mountain
Alrick Riley
Reese finds himself on a perilous personal journey when he takes on a homicide case Detective Carter was never able to close.
421 4x21 - Asylum.png Asylum April 28, 2015 Denise Thé
Andy Callahan
Frederick E.O. Toye
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.
422 4x22 - YHWH.png YHWH May 5, 2015 Dan Dietz
Greg Plageman
Chris Fisher
Finch and Root race to save The Machine, which has been located by the rival AI, Samaritan. Also, Reese is caught in the middle of the final showdown between rival crime bosses Elias and Dominic.