Wow, this was excellent! Probably the best POI x Doctor Who crossover I've read.

Wow, I'm surprised this got so dark! Clara's torture session with Samaritan reminds me of George Orwell's 1984. Good job on this story!

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Uggghhh that was such an amazing fanfic. This ending was good enough for me not to be sad XD I will forever miss Clara :') John too.

I am completely loving this. I actually Ship the 12th Doctor and Clara but not so far as to sexual kind but you know what I mean XD I love when characters are intellectually badass :')

Just woah I'm glad I found this. I love The 12th Doctor & Clara. They are my favorite Doctor & companion. XD Very amazing so far! :')

this is a dream come true! a fanfic of my two favorite shows ever! Person of Interest is so amazing but so underrated its great to see Whovians who like it as as well! also the Doctor and Finch are actually kinda similar, ive been wondering how they would interact if they met.

I am so very glad I gave this a chance after all. Great work and it was definitely worth the read. Loved it.

I was skeptical when I saw the crossover and summary. Your solid first chapter has me thinking the opposite now...

It's probably a good thing that the Doctor never met Control or pretty much anyone from Northern Lights... He'd have a hearts-attack and his head would explode. I'm not sure he could properly understand how the Machine could have any association with such people. Look at Root: the woman's clearly delusional, but the Machine is able to direct her and keep her from being a threat to the innocent. The Machine gives her a Purpose. Which, oddly enough, is what Harold gave Reese back in the pilot episode ("More specifically, you need a job.").

On another note: adios, Greer! You could only dodge those bullets for so long! In terms of the series itself, I'm honestly waiting for the point where Samaritan decides that Greer is a threat and orders his elimination...

I wonder what will happen to all of Samaritan's assets, with Samaritan no more? Is Control still lurking somewhere?

It's oddly fitting that Claire dies saving someone. Clara already noticed the similarities in their names, after all, and Finch is the Doctor's analogue in Person of Interest!

Greer and Samaritan might be in for a rude awakening when they run face-first (metaphorically speaking) into the TARDIS matrix. Recall the TARDIS versus House in The Doctor's Wife: "Look at my girl, look at her go! Bigger on the inside! See, House, that's your problem: size of a planet but inside you are just... so... SMALL!"

Ah, Samaritan, so much processing power at your disposal, but inside, you're very small indeed! And compared to the TARDIS, who exists across all time and space, you might as well be an amoeba.

Also worth mentioning is that the Doctor upgraded her firewalls at the end of that episode...

In short, trying to forcibly "upgrade" Samaritan with the TARDIS (especially when you have NO CLUE what you're doing) is liable to end poorly (as Team Machine was afraid would happen with the Machine - and that was with all parties cooperating!).

but wouldn't the tardis just be like "LOL nope now that i've been connected you i shall DESTROY YOU"

Pleasepleaseplease let John do something that makes the Doctor respect him more because John deserves it
I'm not saying the characters are OOC because you wrote this really well I just know if the Doctor knew more about him I think he's respect him and John is awesome and totally deserves that much

Great story. I was wondering if such a crossover existed and am glad it did. Got the characters down brilliantly.