Person of Interest (2011–2016)
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Finch and Root race to save The Machine, which has been located by the rival AI, Samaritan.



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Episode cast overview, first billed only:
Lionel Fusco
Harper Rose
Dr. Iris Campbell
Caleb Phipps
Devon Grice
Carl Elias


Finch and Root are on a mission to save the Machine, after she gave herself up to Samaritan on her own volition to save Root and more specifically Finch. As Samaritan tries to complete its own mission in destroying the Machine while making what it sees as necessary corrections to the world order, Finch and Root have the difficult task of locating the Machine, who has been silent of late. When Finch and Root do hear from the Machine again, she sends them on a scavenger hunt without them knowing what all the pieces are supposed to accomplish. Finch and Root are without Reese who too has been silent. Finch has another difficult choice to make when he does eventually get an indirect message from Reese. Little do Finch and Root know that there is someone else who is trying to destroy Samaritan, albeit working on a different motive. Meanwhile, Dominic is holding Elias, Reese and Fusco hostage as he tries to negotiate the same deal Elias seemed to have with Reese, Finch and Fusco. Some may ... Written by Huggo

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TV-14 | See all certifications »




Release Date:

5 May 2015 (USA)  »

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Sound Mix:


Aspect Ratio:

16:9 HD
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Did You Know?


The episode's title, "YHWH", refers to the Hebrew characters known as the Tetragrammaton, and appears almost 7,000 times in the Old Testament. The ancient Hebrews took the Commandment against using God's name in vain very seriously and therefore refused to write His name in the Old Testament, choosing instead to abbreviate it. English Bibles usually translate it as "Lord of Hosts," or simply as "Lord." The actual name for God the Hebrews used has been lost to history but most believe it was "Yahweh," although some use "Jehovah" instead. See more »


The wall Root breaks through to get to the pay phone, is part of an old subway station. And yet the wall is made up of unsupported tiles that are less than an inch thick. See more »


Harold Finch: [about stealing a police cruiser] Are you out of your mind?
Root: Since when is that relevant?
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Featured in Person of Interest: B.S.O.D. (2016) See more »


Welcome To The Machine
Written by Roger Waters
Performed by Pink Floyd
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User Reviews

Thank You
8 May 2015 | by See all my reviews

This will be my first review here, I know I have to do this for POI but I can't say anything about it I can not find any words to describe. This last episode was more than amazing. Thank you Nolan and whoever helped this. Best show ever. All episodes were amazing but this final was beyond the limits. I was tired and my eyes were dry, I was going to use eye drops but after this episode I really do not need any eye drops for weeks. Yes this final was amazing but not enough we still need lots of things to be done. I really hope we will get approve for season 5 soon, not only me, world really needs one more season and one more final like this. There are so many bad series going on now and POI does not deserve to finish here. This cast deserves a chance to finish what they have started just give this chance to Nolan, I am sure Jonathan Nolan will give us more than we can imagine.

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