Person of Interest (2011–2016)
18 user 5 critic

The Day the World Went Away 

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 »

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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 DeShawn Harold Mitchell ... Detective #2
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?


This is the 100th episode of the show. See more »


When Root and Shaw are being pursued by the black SUV the Samaritan operatives in it fire at them with a mini-gun mounted on the vehicle's roof. But despite the fact that the sound of the weapon firing never ceased during the chase the only visible impacts are on Root and Shaw's car despite there being heavy traffic. See more »


Carl Elias: I'd rather die on the mat than throw in the towel.
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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

Don't know what to say!!
1 June 2016 | by voldoreSee all my reviews

Some say its good some say its best.... But you don't have to be a die hard fan of the series to understand, marvel and appreciate the level of creativity and twist for this particular episode. I never thought I will miss these characters after I close my monitor off. But I am missing these characters... even though there are still three more episodes to go.For the series' fans this was a treat (and a little sour too).

Thank you for making this series and characters in such a way you almost start living with them. I do feel sorry for few characters who are not going to see the final battle. But still a masterpiece of an episode from a masterpiece series.

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