"Search and Destroy" is the 19th episode of season 4, and the 87th produced hour of Person of Interest. It originally aired on April 7, 2015.
Reese and Finch scramble to protect a software CEO when his behavior becomes increasingly erratic following a hacker attack that reveals all his secrets and unravels his life.
Origin of the Title
"Search and destroy" is a modern military tactic where small units of troops are dispatched to search for enemy troops and destroy them. This applies to Samaritan's pursuit of Khan, as well as its search for the Machine.
Person of Interest: Sulaiman Khan, a software CEO, who's life is systematically destroyed and threatened by Samaritan in order to use his anti-virus software as a method to search for the Machine globally.
Samaritan is searching every network in the world, in order to locate the Machine, it concludes that the Machine is not on a network enabled device on Earth.
Root retrieves a nearly indestructible brief case, whose purpose is unknown.
Khan's financial portfolio was impacted by the "Flash Crash" which occured in “If-Then-Else” and “Control-Alt-Delete”. Although most of the companies in which he invested took major losses, his own company did not, suggesting Samaritan manipulated specific companies for its own purposes during the crash.
The object Root removed from the case and smashed resembles the Fabergé Pine Cone Egg, manufactured in 1900 by Carl Faberge in St. Petersburg, Russia for a wealthy client. Unlike many Faberge eggs, the Pine Cone Egg was never in the possession of the Russian Imperial family, but remained with its original owner until sold at auction, most recently to Joan Kroc, widow of McDonald's restaurant founder Ray Kroc. Unlike the egg Root found in the brief-case, this egg is in two pieces, opening to review a miniature elephant with a rider, and is not attached to its stand. Although of the same quality as a Russian Imperial egg, its appraised value in 1997 was $2.8 million, less than half the value of eggs made for the Russian royal family. Moreover, Faberge eggs are made of enameled metal and precious stones, and would not crash and break like glass, or make the sound of breaking glass as the egg in the brief case did.
Bloopers and Continuity Errors
The code on Root's phone is part of a decompiled (reverse-engineered) source of Stuxnet.
The combo to the briefcase is "314", the first three digits of pi (3.14).
According to the marker shown on the laptop map, the underground bunker would be located on Staten Island, at latitude 40°35'0.13"N 74° 8'14.57"W .