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Season guide

Person of Interest: Season 4

22 episodes Premiered Sep 23, 2014 Updated Sep 20, 2026

Person of Interest Season 4 continues the overarching saga across 22 episodes. The series is an American science fiction crime drama television series that aired on CBS from September 22, 2011, to June 21, 2016, with its five seasons consisting of 103 episodes. John Reese, former CIA paramilitary operative, is presumed dead or involved in events detailed across the series run. The production involves action and adven

Previously on Person of Interest

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • The series follows John Reese, who is a former CIA paramilitary operative and is presumed dead or involved in prior events.
  • The overarching saga is broadcast as an American science fiction crime drama television series on CBS.
  • The series combines elements of action, adventure, crime, and sci-fi and fantasy across its multi-season run.
  • The foundational premise establishes that people are being watched by surveillance systems.

Season overview

Person of Interest Season 4 continues the overarching saga across 22 episodes. The series is an American science fiction crime drama television series that aired on CBS from September 22, 2011, to June 21, 2016, with its five seasons consisting of 103 episodes. John Reese, former CIA paramilitary operative, is presumed dead or involved in events detailed across the series run. The production involves action and adventure, crime, and sci-fi and fantasy elements. Viewers watch the ongoing narrative as the characters navigate their world where they are being watched.

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Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

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Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

27%
73%
Mytharc (6): Crucial lore & season climaxes
Core (16): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

Panopticon

Sep 23, 2014

Forced to take on new identities provided by Root, the team members try to adapt to their new lives. However, some find it hard to ignore The Machine's numbers, which puts them all

S4·E2 Core

Nautilus

Sep 30, 2014

Despite not wanting to help with the new numbers, Finch's interest is piqued when the newest person of interest turns out to be a brilliant college student involved with a mysterio

S4·E3 Core

Wingman

Oct 7, 2014

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. Reese must find a way to

S4·E4 Core

Brotherhood

Oct 14, 2014

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.

S4·E5 Core

Prophets

Oct 21, 2014

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

S4·E6 Mytharc

Pretenders

Oct 28, 2014

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

S4·E7 Core

Honor Among Thieves

Nov 11, 2014

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

S4·E8 Mytharc

Point of Origin

Nov 18, 2014

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

S4·E9 Core

The Devil You Know

Nov 25, 2014

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.

S4·E10 Core

The Cold War

Dec 16, 2014

Samaritan shows its power by erasing crime from the city for a day in an attempt to force The Machine out of hiding.

S4·E11 Core

If-Then-Else

Jan 6, 2015

Samaritan launches a cyber-attack on the stock exchange, forcing the team to risk their lives in a desperate mission to stop a global economic catastrophe.

S4·E12 Core

Control-Alt-Delete

Jan 13, 2015

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

S4·E13 Core

M.I.A.

Feb 3, 2015

Root and Reese investigate a small town in upstate New York that holds the key to Shaw's location... and whether she's dead or alive.

S4·E14 Core

Guilty

Feb 10, 2015

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

S4·E15 Core

Q&A

Feb 17, 2015

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

S4·E16 Core

Blunt

Feb 24, 2015

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.

S4·E17 Core

Karma

Mar 10, 2015

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 sta

S4·E18 Core

Skip

Mar 24, 2015

Reese must protect a bounty hunter who refuses to allow the potential threat to her life sway her from the relentless pursuit of her target. Also, Finch tries to set the plan he be

S4·E19 Mytharc

Search and Destroy

Apr 7, 2015

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.

S4·E20 Core

Terra Incognita

Apr 14, 2015

Reese finds himself on a dangerous personal journey when he takes on a homicide case Detective Carter was never able to close.

S4·E21 Mytharc

Asylum

Apr 28, 2015

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

S4·E22 Mytharc

YHWH

May 5, 2015

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 Eli