The Person of Interest team suffers a devastating loss and confronts staggering challenges in the hit series' most explosive season yet. Adapting to the evolution of The Machine, now completely self-governed and hidden from all, technical wizard Finch (Michael Emerson) and ex-CIA operative Reese (Jim Caviezel) team with rogue agent Sameen Shaw (Sarah Shahi) to save lives and seek justice, but their missions now threaten to tear them apart. NYPD Detectives Carter (Taraji P. Henson) and Fusco (Kevin Chapman) finally unravel the criminal police conspiracy "HR" - but at a tragic cost. And former enemy - and now highly-tuned confederate of The Machine - Root (Amy Acker) becomes an uneasy ally when the team learns a second surveillance apparatus to rival The Machine is on the verge of activation. The electrifying, 23-Episode Season Three is a must watch!