There are a plethora of mastermind-sidekick combos like Finch and Reese, but none quite the same. There are some other mastermind-sidekicks that are just as unique, and here's how some of them stack up against Finch and Reese.
In the episode "Matsya Nyaya," "Person of Interest" flips trust on its head, and now it's much more difficult for the characters to know who can be trusted.