Person of Interest: Season 3

The Machine continues to provide intelligence to both the United States government to deal with large-scale threats to national security, and to its creator, Harold Finch, to deal with crimes that are "irrelevant" on the large scale but hugely important on the individual. But, to Finch's distress, the Machine has also chosen a new operative, the hacker of dubious morality known as Root. As Root operates as the Machine's free-roaming agent of chaos, Finch's police allies are consumed by the battle against corruption, and Finch slowly becomes aware that a second, potentially more powerful AI is about to be born.Person of Interest's first two seasons were mostly made up of procedural, episodic stories linked by a few continuing arcs. The third season nominally continues in this mode but the story arcs are now much more front-and-centre. We have former antagonist Root gradually coming in from the cold as a fellow ally (albeit a very unpredictable one) in the service of the Machine, and…