19. Most Likely To...

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 ( Nestor Carbonell ), sends Reese and Shaw to a high school reunion in Westchester. They manage to prevent a planned murder, while fending off an ambush by Vigilance. Meanwhile, Finch and Fusco go to Washington, D.C. to find out why Leona was targeted, but Vigilance beats them to it. Collier obtains classified documents about the Machine and disseminates them world wide. Senator Ross Garrison ( John Doman ) publicly denies the existence of the Machine and orders Control to shut it down. She gives the command, and shreds Collier's eyes-only file. With its Primary Operations compromised, the Machine restructures, transferring massive amounts of red-flagged data to Tertiary Operations: Root.