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 team witness Leona Wainwright being killed by a suicide bomber. She worked for the government, managing security clearances; Finch deduces from cell phone information that Vigilance killed her. Their next number, prosecutor Matthew Reed , sends Reese and Shaw to a high school reunion in Westchester.
The team receives the number of Maria Martinez , an engineer working for the international energy company HydralCorp. Maria is working to clear the name of Omar Risha , a man from Iraq suspected of being a terrorist.
The Machine orders Root on several tasks such as helping a convict escape and using him to impersonate a Department of Defense employee in order to obtain a secret note. Afterward, she and Harold’s team coincidentally reach the same person, a janitor.