Complete story — includes the ending
Control holds Harold, Shaw and Arthur captive. She orders Shaw killed, but Root enters, guns blazing, and frees the trio. Root herself is shot and captured by Control, who tortures her, demanding access to the Machine. Control destroys the hearing in Root's right ear and threatens to make her completely deaf and blind. Meanwhile, Arthur reveals that he has a copy of the Samaritan AI in a safe-deposit box. They go to retrieve it, and Vigilance militants attack the bank. Harold locks himself, Arthur, and the bank manager in the vault. While Shaw readies a bomb to break out of the vault, Harold tells Arthur about the Machine and convinces him to destroy Samaritan to keep it from falling into the wrong hands. Vigilance breaks into the vault and captures everyone, including Shaw, but Reese and Lionel save them. Meanwhile, the Machine helps Root to escape from Control. Root calls Harold to tell him that the Samaritan drives were not destroyed: The bank manager was an imposter who swapped the disks with replicas. The impostor is shown handing the drives to Decima Technologies head Greer, who shoots her to cover his tracks. He has great plans for Samaritan.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Person of Interest season 3. HTML formatting and reference markers removed. · Content license