Panopticon (Person of Interest)

In Budapest, a woman named Martine Rousseau (Cara Buono) kills a journalist that may have known about the Samaritan program. Samaritan has successfully prevented many threats for the United States. However, Senator Garrison (John Doman) expresses his concerns to Greer (John Nolan) as Decima Technologies has been defunct and is unsure of where the information is held. This worries Greer, who considers eliminating him but Samaritan tells him not do it yet.

The team has been living new lives since Samaritan's activation. Shaw (Sarah Shahi) now works at the cosmetics counter of a department store, Reese (Jim Caviezel) works as a NYPD Narcotics Detective, and Finch (Michael Emerson) works as a part-time college professor. After a talk with Root (Amy Acker), Shaw goes to a self-esteem seminar where she runs into Reese, who was given the same address at the exact time. They leave the seminar but a payphone rings. Reese answers and is given a new number.

Reese meets with Finch in a park and reveals the number belongs to Ali Hasan (Navid Negahban). Finch refuses to cooperate with the Machine after its order to kill McCourt and tells Reese to avoid the numbers as Samaritan will find them. Reese still decides to follow Hasan, who owns an electronics shop. He sees that Hasan is connected to a gang named "The Brotherhood", who asked Hasan to set up a network between them. After meeting with a representative of the Brotherhood named Lincoln "Link" Cordell (Jamie Hector) and giving him a burner phone, Hasan is revealed to send a bomb detonation code to Link's cellphone. Reese hijacks Link's car and takes out his cellphone before it explodes.

Reese and Fusco (Kevin Chapman) question Hasan when he realizes that his plan failed. They return to the shop to find it trashed and his son Ben missing. The Brotherhood contacts Hasan and tells him to get the network by midnight or they will kill Ben. Reese confronts some of The Brotherhood's dealers but is knocked out by Shaw, who tells him that they can't get involved in this. Reese then decides to visit Elias (Enrico Colantoni) for help in intercepting a shipment of heroin from The Brotherhood.

Finch decides to help Hasan in setting up the network and finds that Hasan developed a covert communications network using old VHF television antennas laced throughout the five boroughs of New York, making it invisible to Samaritan. He then gives Reese one of the phones that uses Hasan's network. Elias' henchman, Scarface (David Valcin) rams one of The Brotherhood's SUVs. Reese enters the house where the heroin and Ben are held while Shaw eliminates many of The Brotherhood from a different house. Link tries to escape with Ben but Reese subdues him just as the police arrives but Reese covers everything as part of an operation. Rousseau arrives at the scene posing as a DHS agent and does not believe in the reported story of the police.

Finch meets with Reese and gives him Hasan's network so they can avoid Samaritan. For his actions, Reese is promoted to Homicides and partnered with Fusco, being assigned to Carter's desk. Shaw decides to accept to go on a date by someone who constantly sent her notifications on an app. At a café, she finds that the man, Romeo, wants her to work with him on a gang operation, which she accepts. Finch reviews his corrected thesis and finds that the letters marked are from a code. The codes lead him to a library for a specific book and finally arriving at an underground hideout, using a forgotten Interborough Rapid Transit Company station.

• "Panopticon" at IMDb