Person of Interest: The Complete Fourth Season

Although they've saved countless lives thanks to The Machine's omniscience, the team is still reeling from the devastating loss they experienced last season. Now, in Season Four, they face an uncertain future. With a second machine – Samaritan – now online, the members of the elusive team – Reese (Jim Caviezel) and Finch (Michael Emerson), along with lethal operative Shaw (Sarah Shahi), unpredictable cyber-hacker Root (Amy Acker) and homicide detective Fusco (Kevin Chapman) – are now targets themselves, hiding in plain sight. Facing unknown danger, the POI team must find a way to outsmart Samaritan, an all-seeing, all-powerful artificial intelligence that's self-governing, continually evolving and growing stronger every day. Meanwhile, former enemy Elias (Enrico Colantoni) now becomes a desperate ally in the fight against a new gang known as The Brotherhood.