On this episode of Person of Interest...
Control, after dropping her daughter off at school, prepares to stop a group of terrorists with the help of Samaritan.
Samaritan, using the boy avatar, requests a meeting with the president.
Control begins to question Samaritan's methods and motives after it refuses to let her see a computer hard drive.
She goes off mission and uses two of her agents to track down the final "terrorist," but he gets away. The computer is destroyed.
Reese and Root, after going on a rampage in the city, take down Control. They believe she knows where Root is.
ISA agents come to rescue Control, but Finch wants one of their phones believing them to be a mole for Samaritan.
Finch tells Control about the stock exchange attack and Samaritan.
The POI team gets a clue, but no evidence that Shaw survived.
Control hunts down and kills the final terrorist, who claims he isn't one and was working to provide code.
She decides to check Finch's story and discovers that someone has cleaned up the area where the gunfight occured.