Root under the guidance of The Machine breaks a prisoner named Billy Parsons out of his prison transport and uses his resemblance with a German to receive a package. Then she sends Billy back to prison with instruction of how to be protected along his sentence. She meets the janitor Cyrus Wells and immediately after, Finch receives his number from The Machine. Reese and Shaw follow Root and Cyrus and her are attacked by the Vigilance. Root forces a situation to arrest Cyrus and save him, and Finch calls Fusco to protect him. But Root poses of a FBI agent with a warrant and Fusco's captain asks him to release Cyrus. She learns that Cyrus was a wealthy man that donate his fortune after the murder of his two partners and friends and their co-workers. Decima uses a device to jam the contact of Root and The Machine, and Reese saves her, but Cyrus is kidnapped by the men of Decima. Root steals Finch's device and asks a doctor to implant it in her deaf ear. She updates the firmware, allowing her to contact The Machine without a cellphone. They learn that Decima intends to use Cyrus' retina to access a laboratory where a powerful chip was developed.
"Root Path" is a good episode of "Person of Interest", where Root tries to stop Decima from stealing a state-of-art chip. However, somehow, she prefers to save Cyrus Wells rather than the chip. She discloses to Finch that she was the killer of Cyrus's partners and co-workers, and she might have had remorse for the first time. Would The Machine be also changing her psychopath feelings? My vote is eight.
Title (Brazil): "Root Path"