An awesome, action packed, and dark hour of person of interest. "Search And Destroy". To quote Matt Fowler of IGN When Samaritan is truly acting is the invisible, and emotionless being that it is its terrifying and creepy. of course i never tell spoilers but its a chilling hour where root returns to team with john and finch to protect an anti virus software developer who attracts the renegade A.I'S attention. we also get major plot advancement when it comes to the machine and the idea of Samaritan itself trying to find the machines location. from roots introduction scenes to john having to fly solo with khan and Samaritan and a trip to Rikers, Search and Destroy was an awesome hour to get us into the groove of the final four episodes.