"Relevance" is the sixteenth episode of the second season of the American television drama series Person of Interest. It is the 39th overall episode of the series and is written by Amanda Segel and series creator Jonathan Nolan and directed by Nolan. It aired on CBS in the United States and on CTV in Canada on February 21, 2013. The plot finds government operative Sameen Shaw (Sarah Shahi) who tracks and stops terrorist threats before they occur on the run and the focus of Finch and Reese's attention. Their pursuit proves to be formidable when they discover that her skill set rivals their own. Upon airing, the episode received ratings of 14.22 million in the United States, including 2.9 million adults aged 18–49. It received very positive reviews from critics, praising its writing, Nolan's direction and Shahi's performance. Plot Sameen Shaw, a government assassin, and Michael Cole, a computer specialist/operative working for Special Counsel, neutralize a terrorist plot, acting on information from a Pentagon group called "Research". Cole suspects that Research may sometimes be wrong, having found out from the Social Security number belonging to an electrical engineer they had previously killed that he was hired by the US government, not by terrorists. The Machine meanwhile gives their numbers to Reese and Finch, since their lives are now in danger. A hit team is sent by Special Counsel to eliminate Shaw and Cole, because Cole may have obtained information on the Machine. They kill Cole. Shaw escapes with help from Reese, whom she shoots, believing him to be another assassin. While on the run, Shaw is captured and tied up to be interrogated by Root, who believes she may hold the key to the Machine's location. Root leaves abruptly to avoid another hit team sent by Special Counsel. Just as the new hit team are about to kill Shaw, Reese saves her. He brings her to meet Finch, who explains that "Research" does not actually exist (implying it is, in fact, the Machine), and offers his aid to her. She refuses, so he offers her his card, which she looks at, but politely declines. She goes to confront whom she believes to be Control (head of the ISA's operations using the Machine) but ends up meeting Special Counsel, and surprisingly returns the flash drive to him with the information Cole had recovered, then kills the subordinate who had ordered her