Reese and Shaw chase a Decima's agent to learn the location of Finch, but the guy commits suicide. Root brings the servers and her group to Reese's safehouse. Greer, who holds Finch prisoner, meets Senator Garrison and gives arguments for him to convince the president to use Samaritan, highlighting that the system is not for sale. They will only sell information to the government. Root sends Shaw to a hotel and she notes that there are agents from the Secret Service inside. The Machine delivers five numbers to Root and Finch recognizes one of them from Control. Shaw sees a meeting of Control, Garrison, Manuel Rivera, who is an advisor of the president and General Holcomb, who is the head of the NSA. Shaw wants to kill Control and Garrison, but Root tells her to protect the group since Collier and the Vigilance are coming.
"A House Divided" is an excellent episode of "Person of Interest", with the development of many situations. In flashbacks, the vier see why Collier joined the Vigilance. Root has concluded the modifications in the servers of the Samaritan. Finch unsuccessfully tries to convince Greer the dangers of the open system of the Samaritan. My vote is nine.
Title (Brazil): "A House Divided"