Complete story — includes the ending
Finch decides to use Reese and Fusco to run a surveillance test. Following malfunctions in the facial recognition system, Reese and Finch steal 64 next-generation GPU blade servers which, once connected to the networked PlayStation 3s, are used to reboot the Machine at full power. When the Machine shows signs that it's failing to place threats in context, Root and Finch have it run a contextual background on them, leading to it identifying them as threats and locking them out of the system. The Machine has lost the ability to differentiate between past and present, forced to relive the 42 times Finch killed it. Reese engages in a firefight against an amateur assassin the Machine sent after him. Root puts herself under an anaesthetic so the Machine cannot use her cochlear implant against her and Finch has to convince the Machine that the team are not threats. Upon the Machine's first reboot, it provided 30 different numbers, most of whom were not involved in violent crimes; however, one of those numbers, ex-con Jeff Blackwell ( Josh Close ), was dismissed as someone who was not involved in any nefarious activity, only to be recruited by Samaritan.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Person of Interest season 5. HTML formatting and reference markers removed. · Content license