Person of Interest (2011–2016)
7 user 1 critic

Deus Ex Machina 

The team takes desperate action in its race to prevent Samaritan from coming online and making them its first targets. Meanwhile, the months-long battle with the anti-surveillance terrorist group Vigilance comes to a shocking conclusion.



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Episode cast overview, first billed only:
... John Reese
... Lionel Fusco
... Root
... Sameen Shaw
... Harold Finch
... Peter Collier
... Senator Ross Garrison
... John Greer
... Jeremy Lambert
... George Hersh
... Adams
... Manuel Rivera
... Control
... Madison
Joel Perez ... Mask


Having taken over the power system causing a blackout, Collier and Vigilance have managed to capture all the people they feel need to be brought to justice for creating and/or operating the ever knowing surveillance system, the only one of which he knows by name being the government's Northern Lights project. Among those they have captured and have placed on trial, with a live video feed going out to the entire world, are Finch, Control, Senator Garrison and Greer. Those on trial seem to be standing in solidarity against Collier's judgment even before the facts come to light. However, that solidarity may break down based on insider information one of the accused has. Meanwhile, Reese has an unlikely ally in the form of Hersh, both of who are looking for the secret location of the trial to free their respective bosses. And Shaw is assisting Root in trying to locate and shut down Samaritan, needing to pose as Decima to do so. But Shaw only has a small part of the picture as Root does ... Written by Huggo

Plot Summary | Plot Synopsis


TV-14 | See all certifications »




Release Date:

13 May 2014 (USA)  »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

16:9 HD
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Did You Know?


At the end episode, as the library is being searched, several photos spill from a file; all of people whose numbers Finch received at some point. Among them are Wayne Kruger (3.02 - "Nothing to Hide"), Fermin Ordoñez (2.09 - "C.O.D."), Patrick Simmons (3.10 - "The Devil's Share"), Ian Murphy (3.03 - "Lady Killer"), and Joss Carter (1.09 - "Get Carter". The machine also phones, presumably with her number, in 3.09 right before her death). See more »


Officially, the government gave Nathan Ingram the credit for building the machine. At least two people Vigilance had on trial should have known this (Finch and Greer) and either one of them could have offered up Nathan's name as the machine's creator in an effort to dissuade Collier from killing them. See more »


Peter Collier: We need to adjust our sights.
Madison: Our sights?
Peter Collier: This is an information war. We need to go after the people who control it, abuse it, destroy people's lives, and answer to no one.
Adams: Now you're talking. What do you have in mind?
Peter Collier: A statement. Someone who represents everything that's wrong with an unchecked Orwellian state. And we put them in the crosshairs, and we teach them a lesson no one will forget.
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References The Prisoner (1967) See more »


Exit Music (For a Film)
By Radiohead
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User Reviews

Person of Interest' evolution into a 'truly great' show!
16 May 2014 | by See all my reviews

Shoo away everybody who thinks Person of Interest is no longer about the "Person of Interest of the week" and hence sucks. If you don't like it, simply don't watch it. While PoI was a good/great show when it dealt with a 'case of the week' theme in the first two seasons, it has elevated into a truly great show in Season 3, a show that can now be spoken of in the same breath as the likes of Breaking Bad. 'The Crossing' and now 'Deus Ex Machina' have been two of the best hours on TV the past season. – The closest comparison to PoI's evolution would be Arrow, a show that was good in it's first season dealing with a baddie of the week but has now elevated into a great show with a season-long-baddie in Season 2. - I honestly thought that there would not be a show in a long time that could match the grandeur & scale of 'Lost'…such was the enormity & complexity of Lost that it's creators themselves couldn't understand where the show was heading. Now I can happily tick that item off my list of TV worries now that Person of Interest is here to keep me company in it's 'machina' arms! Besides the PoI writers actually seem to know where the show is heading, unlike the ones at Lost.

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