Person of Interest (2011–2016)
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The Day the World Went Away 

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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.


Jonathan Nolan (created by), Andy Callahan | 4 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
John Nolan ... John Greer
Joshua Close ... Jeff Blackwell (as Josh Close)
Geoff Pierson ... FBI SAIC Roberts
Robert Ray Manning Jr. ... Zachary (as Robert Manning Jr.)
Sunita Mani ... Sonum
Christine Cartell ... Brenda Jones
Enrico Colantoni ... Carl Elias
Reese Madigan ... Detective #1
DeShawn Harold Mitchell ... Detective #2
Barrington Walters Jr. Barrington Walters Jr. ... Banger


Feeling like his time is near, Finch hopes to get some answers directly from the Machine before he locks her down, while in the process not wanting his friends to die on his behalf. Finch continues to have philosophical differences with Root about giving the Machine the tools to defend herself, those which were not the rules he wanted when he created her. Finch may have subconsciously predetermined his fate when the next number provided by the Machine is his, meaning that his cover as college professor has been blown. Regardless of Finch's feelings on the matter, his friends intend to protect him to their own deaths if that's what it takes, as in Reese's words Finch is just the next in the latest of numbers he was hired to save. Also on board until the end is Elias, who has seen his friends killed by Samaritan. Finch may make some decisions about the Machine based on what happens as Greer and Samaritan's legion track him. And Reese believes he has come to the true reason why Finch's ... Written by Huggo

Plot Summary | Add Synopsis


TV-14 | See all certifications »

Parents Guide:

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Release Date:

31 May 2016 (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 episode is named after the Nine Inch Nails song "The Day the World Went Away", that appears in the episode's closing scene. See more »


When Root and Shaw are fighting the Samaritan operatives, their guns do not recoil. This can be clearly seen when a Samaritan agent brings a heavy gun into the field which has lots of bullet sagging from the gun. They should move towards to the gun's barrel. See more »


Root: You don't name something you may have to kill.
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Crazy Credits

At the end of most of the episodes, Finch says "stay tuned for scenes from our next episode." This line is not included in this episode. See more »


References Person of Interest: Witness (2011) See more »


The Day The World Went Away
Written by Trent Reznor
Performed by Nine Inch Nails
See more »

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User Reviews

Can't get any better than this
31 May 2016 | by raasib16See all my reviews

The story, the climax, the feels, the Nine Inch Nails song. Everything felt so perfect in this episode.

If I could rate top 3 Poi Episodes this has got to be in that. One of the most complete episodes Poi has with all the elements to be a classic for what is setting up one of the best season finale of what is to be the last season of it. Can't believe this is going to end in just 3 more episodes. I don't want to go into the story a bit. This episode it too good to spoil a part of it even.

Don't wait any longer. Ride the feels train. But only 3 more episodes. I feel crying already.

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