1. Panopticon

Complete story — includes the ending

The team adopts cover identities in the wake of Samaritan's rise. The Machine provides Reese the number of Ali Hasan, who has built a communications network VHF television antennas across New York that cannot be traced by Samaritan. When a street gang known as "the Brotherhood" forces Hasan to set up a network for them, Hasan attempts to assassinate one of the leaders via a bomb placed in a burner phone. In retaliation, the Brotherhood kidnaps Hasan's son; Reese hires Elias to recover him. Finch gives Reese a phone belonging to Hasan's invisible network. A Samaritan agent named Martine Rousseau arrives in New York to eliminate threats to Samaritan. The Machine leads Finch to a new hideout inside an abandoned Interborough Rapid Transit Company station. Reese, via his cover identity as an NYPD detective, is placed on the 8th precinct's homicide task force.