Plot summary
In a series of flashbacks to 2010, the narrative reveals the backstory on Collier, the face of Vigilance. His brother had been falsely accused of terrorist activities, held without trial, and had committed suicide as a result. The Machine's latest numbers include Control, Senator Garrison, a presidential assistant, and a seemingly unconcerned Greer. Vigilance kidnaps them, along with Finch, and the episode ends with Vigilance about to conduct a private trial of their detainees, while Reese and Shaw, along with Hersh (joining forces after a tense confrontation) watch from a closed-circuit TV screen set up for their benefit. Meanwhile, Root has discovered the location of the Samaritan system.
Credits
Adapted from Wikipedia contributors, Person of Interest season 3. HTML formatting and reference markers removed.