We've talked a lot about how Person of Interest is one of the best science fiction shows on TV because it's about the birth of an artificial intelligence known only as the Machine. It's also set in a kind of dystopian alternate world where US intelligence agencies are engaged in conspiracies so dark and corrupt that Philip K. Dick would be proud. But Person of Interest is also about a lot of other things — it's a police procedural and it deals a lot with organized crime and New York City's rotten backroom politics. How can you ever hope to catch up with all this and start watching this awesome show for the science fiction?
That's where our special Person of Interest science fiction episode guide comes in. If you want to catch up on the SF plot points in the series, here are the episodes you need to watch. (If you want a primer on some of the other subplots in the show as a whole, you can pick up everything you need to know in this recap from one of the most important episodes last season.)