Finch and Root race against time to try and save the Machine on the season finale of Person of Interest. "YHWH" is the 22nd episode of the show's fourth season.
Finch and Reese attempt to save the Machine's source code on the premiere of Person of Interest. "B.S.O.D." is the first episode of the show's fifth season.
The investigation into a technical glitch garners the attention of Samaritan on Person of Interest. "Shotseeker" is the fourth episode of the show's fifth season.
Several encounters occur with Samaritan operatives on Person of Interest. "The Day the World Went Away" is the tenth episode of the show's fifth season.
When you find that one person who connects you to the world, you become someone different, someone better. When that person is taken from you, what do you become then?
