#this all started because I was thinking about Reese seeing Mycroft's umbrella and wanting to get one for Finch

[themirokai]

When Mystrade Met Rinch

Ok so @ambi-apocalypse got me to watch Person of Interest, and apparently I've now gotten @musicismagic-writes to watch it. And previously the ship that the three of us had in common was Mystrade. So this Mystrade to Rinch party gave me crossover thoughts, but those crossover thoughts would be a much more ambitious story than I'm actually ever going to write, so I figured I'd just post my plot bunny/outline here. If anyone wants to adopt this and actually write it into a story, have at it, but please let me know if you post it!

Most of it under the cut cause it's kinda long...

Finch and Reese are working a number and figure out that the dude is a freelance assassin. He’s clearly the perp but for some reason they’re not able to take him out, so they’re trying to figure out who his next target is.

Mycroft is in New York for a meeting at the UN. Greg, his husband, has decided to tag along and make a holiday of it.

Reese figures out that Assassin is surveilling this tall British dude with fancy suits and an umbrella. Reese suggests that Finch should talk to him about vests in order to get close to him. Finch informs Reese that the gentleman is wearing a waistcoat, not a vest. “When the garment is the third part of a three-piece suit it is referred to as a waistcoat.”

“See?” Reese says, “you can talk to him about fancy clothes stuff and then casually work your way around to why he’s being stalked by an assassin.”

After some digital digging…

“Ah, there he is,” Finch says. “His name is Mycroft Holmes. Looks like he’s a bureaucrat in the Department for Transportation.”

“That doesn’t add up, Finch. What’s a small time transportation guy doing at the UN? And he looks like his clothing budget rivals yours.”

“Maybe civil servants are better compensated across the pond? Or maybe he has inherited wealth?”

“Can’t you find out?”

“No. He’s remarkably off the grid.”

Reese realizes that Mycroft has a badass security detail. So what’s a well-dressed mid-level bureaucrat doing at the UN protected by a security detail? And why would the Machine give them the number of an assassin who’s trying to kill him if that security detail was up to the challenge? Something something, they figure out that the Assassin or whoever hired him has bribed/infiltrated/compromised/whatever the security detail.

Reese goes in. POW POW fight scene. Reese incapacitates like 3 dudes who were protecting Mycroft. So that leaves Mycroft and Greg.

“Listen to me very carefully,” Mycroft says, making eye contact with Reese, “there are 4 things this could be about. None of them require my husband’s involvement. You will let him go at once -“

“Sod off, Mycroft, I’m not leaving you!”

“But,” Mycroft continues, ignoring Greg, “if you harm a single hair on his head,” here he draws the sword from his umbrella, “I will open you from chin to groin.”

“Mr. Holmes I promise you I will - is that a sword?”

“A sharp one. And I assure you that I am quite good with it.”

“Did you pull it out of an umbrella?”

Mycroft barely restrains his eye roll. “Do keep up.” He turns to Greg. “Gregory, kindly go and phone Anthea and give her code gamma orange 6.”

Reese convinces Mycroft that his security was compromised by Assassin. Reese is happy to let Greg go but wants to protect both of them and cautions them against making any phone calls that could tip Assassin off.

Mycroft digests all this and then tells Reese that he wants to talk to the person in Reese’s ear. Finch agrees and they get on the phone.

“Everyone in your government is too frightened of me - appropriately - to try anything like this,” Mycroft starts off. “Your associate is former CIA but has left that employment and now has a wealthy benefactor. Your operation is quite small and so it stands to reason that the wealthy benefactor is also the person calling the shots. Who are you?”

“I’m someone with accurate information and a desire to use it to prevent harm, Mr. Holmes.”

They talk. Game recognizes game. Mycroft knows that the Americans wanted the Machine after 9/11 and has now deduced that they have it and Finch has access to it. Mycroft decides he can trust Finch and Reese and lets Reese take them to a safe house while they wait for Anthea to assemble and send a clean security detail. Reese asks if they’re sure Anthea hasn’t been compromised. Greg laughs a lot.

On the way to the safe house…

“So about that umbrella,” Reese says, looking at Mycroft in the rear view mirror. Mycroft raises an eyebrow in response. “Can anyone buy one or is it an MI6 thing?”

“If Gregory and I make it out of this situation unharmed, I would be happy to contact the purveyor on your behalf, Mr. Reese. Though I will say that this sort of weapon doesn’t seem your style.”

“Oh, it wouldn’t be for me,” Reese says with a smile. He touches his ear. “I know what I’m getting you for Christmas, Finch.”

“Mr. Reese-“

“It’s a weapon that isn’t a gun and doesn’t need to be walked!”

“Actually, it’s also a gun,” Mycroft says.

“Shh, he doesn’t like guns.”

“Walked?” Greg asks.

“Already got him a dog. But sometimes the dog is with me.”

They get to the safe house but Greg and Reese are both restless. Making sure Mycroft is safe is good, but actually stopping Assassin would be better. Greg wants to use himself as bait to lure out Assassin, then have Reese get him. Mycroft Does Not Approve. Finch trusts Reese’s judgment. Reese calls in Carter for backup. Carter and Greg hit it off immediately. Mycroft recognizes Carter as a consummate professional who has - in his opinion - a more appropriate level of risk tolerance than Greg or Reese. He, still grudgingly, gives his approval for the Greg as Bait plan.

The plan works! Assassin is captured. Reese says he can take Assassin to a Mexican prison. Mycroft has other plans that involve an inescapable prison on an island. Anthea’s team arrives and takes custody of Assassin for transport to Sherrinford.

Finch and Mycroft have a conversation. Finch is concerned that someone with Mycroft’s position and resources knows about them and the Machine and his access to it (however limited). Finch is worried that Mycroft is going to want a version of the Machine for London. Mycroft assures Finch that while he respects what Finch has accomplished, the Machine is not his style and he prefers getting his intelligence the old fashioned way. He also has no intention of compromising Finch and Reese, but he would like to be able to call them up from time to time. Finch agrees as long as he can call Mycroft when needed. Greg tells Carter that if she ever wants to move to London, he’s got a spot for her at the Met.

They part ways amicably… until next time.