As the FBI pursues "the man in the suit," Reese is even more determined to protect the latest person of interest after learning she is the sister of a soldier who was killed in action.

The team is met with surprises during an investigation into a hypnotherapist; an antiquities dealer has ties to a crime organization.

The secrets of Finch’s operation before he enlisted Reese are revealed, including shocking ties to present-day events.

Reese, Shaw and Fusco must protect a unassuming office worker who stumbles into a dangerous conspiracy while moonlighting as fake detective. Finch travels to Hong Kong as part of his academic cover identity.

Control, who oversees the handling of relevant numbers for the government, begins to question the methods and intentions of the Samaritan program. Also, alarming news reports of a pair of vigilantes rampaging through the Northeast begin to surface.

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.

Reese’s cover could be blown when he realizes the latest POI has ties to his old CIA colleague, Kara Stanton.