Person of Interest (2011–2016)
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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.


Chris Fisher


Jonathan Nolan (created by), Denise Thé | 2 more credits »





Episode cast overview, first billed only:
Jim Caviezel ... John Reese
Kevin Chapman ... Lionel Fusco
Amy Acker ... Root
Sarah Shahi ... Sameen Shaw
Michael Emerson ... Harold Finch
Julian Ovenden ... Jeremy Lambert
Cara Buono ... Martine Rousseau
John Nolan ... John Greer
Mark Gessner ... Gary
Chris LaPanta ... Kenneth (as Christopher LaPanta)
Brennan Taylor Brennan Taylor ... Investment Banker
Charles Techman ... Old Man
Gameela Wright ... Single Mom
Greg McFadden Greg McFadden ... Businessman
Chester Jones III ... Monty


The first act following the Machine and Samaritan's cold war summit, which ended in a standoff, is that Samaritan starts to take the market down by crashing the New York Stock Exchange. Samaritan's plan entails a few small rebounds to prevent the fail-safe system from kicking in. Reese, Finch, Root and Fusco know that the best way to combat this take down is not to deal with anything on the market floor, where the minority of trades are actually made, but to deal with the server in the Exchange's basement, the server which processes the vast majority of trades. Shaw is not with them as she still needs to hide from Samaritan's cameras. As such, Shaw has her own task off site. Both the foursome and Shaw's tasks end up not being as straightforward as they would have liked, each placed in a precariously life threatening situation. Root has to wait for the Machine to evaluate all the possible options for success before moving. The question becomes if there is not one option which has a ... Written by Huggo

Plot Summary | Add Synopsis


TV-14 | See all certifications »

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Release Date:

6 January 2015 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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Did You Know?


The drawing in the episode is "Dancer Adjusting Her Slipper" by Edgar Degas (1873). Between 1873 and 1874, Degas made a series of pencil, chalk and graphite studies of ballet dancers, shown in different poses and from different angles. These drawings served as preparatory studies for his ballet themed paintings of the same period. See more »


While Harold is teaching the machine chess and is talking about the history of the queen and its use as a sacrifice, he forces the machine's queen into a position where he can take it with his rook, but then when the camera enters slow motion when he makes his move, it shows him taking the machine's king instead, despite none of his pieces having been in a position to do so. Furthermore, the king is never actually taken in chess, because if it's in a position where it could be taken (check) then the player is required to remove it from danger, either by moving it or by blocking the piece threatening it. If it's impossible to get the king to safety, then the game is over without the king ever actually being taken (checkmate). See more »


[repeated lines]
Harold Finch: We need a strategy.
Root: [to The Machine] A little help, please.
[Reese, Finch, and Fusco look at Root]
John Reese: It's a hell of a time for your machine to go on the fritz, Harold.
Harold Finch: Give it a second. It's got a lot on its mind.
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Requiem in D Minor, K. 626: VI. Lacrimosa
Written by Wolfgang Amadeus Mozart
Performed by London Philharmonic Choir
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User Reviews

Great idea, plot and acting
10 February 2015 | by btmfc-236-187893See all my reviews

This is another episode in this season that I re-watched for a few times (the other episode is saving Elias from Brotherhood) because it is so good and I hope to cherish every seconds of it and pick up clues from here and there throughout the entire episode. This season of POI has surprised me with its continuous strength in providing first class acting together with well enough written script that it can still attract new viewers in its fourth season (I have recommended this episode to my friends and they are starting to follow this series). This episode in particular is big screen worthy for it is perfect for all aspect in my opinion.

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