Shaw and Reese look into Walter’s life. As their investigation proceeds, it is revealed that Walter, posing as a detective, is trying to find out who killed Abel.
Shaw, having just walked out of her old job as a wheelman, has her interest piqued by Tomas. Fusco and Reese get one of his members arrested on a drug charge, enabling her to join his gang.
Reese takes an instructor’s position at the NYPD police academy to observe the latest number; recruit Dani Silva . The team learns that she is spying on her fellow recruits.
Following the cliffhanger ending of the previous episode, Martine engages in a gunfight with Shaw, who ultimately escapes. Root immediately picks her up on a motorcycle and they race away from the scene.
Samaritan decides to bring an end to the hide-and-seek game that it has so far played with The Machine. To bring The Machine out of hiding, Samaritan showcases its strength by eliminating crime in New York City for a whole day
Following the stock market crash that occurred in the previous episode, Finch, Reese, Fusco, and Root go to install software at the stock exchange that will stabilize the market.
Person of Interest S04E12, After an exchange between Control and one of Samaritan’s operatives, the operative instantly shuts down the government’s access to Samaritan, forcing a discussion between the operative, Control, Senator Garrison, and Greer, which results in access being returned.