The Machine delivers the number of Greer to Reese and Shaw and the coordinates of Fort Meade. They believe Finch is at NSA, a place almost impenetrable. Meanwhile the corpses in Tunnel 85 are found and FBI Agent Martin LeRoux interrogates Fusco since he found his secret investigation. Soon Fusco learns that LeRoux is the killer and intends to eliminate him and make his body disappear. Finch has infiltrated in NSA and is installing the powerful ICE-9 virus in the Samaritan's servers. He discusses with The Machine the different scenarios if he had not created it. The Machine creates simulations of the lives of Nathan, Finch, Grace, Shaw, Cole, Reese, Jessica, Fusco, Carter, Root, Greer, Senator Garrison and the Samaritan to Finch. When he is ready to activate the virus using the voice password, Greer's agents arrive and don't let him complete his work. Greer takes Finch to a room to interrogate him.
".exe" is another masterpiece of "Person of Interest", with another wonderful plot. The fate of Finch and his friends simulated by The Machine is fantastic. The death of the evil Greer is disappointing since Shaw should have eliminated him with a shot into his forehead. Fusco seems to have resolved his situation with LeRoux. My vote is ten.
Title (Brazil): ".exe"