Person of Interest

In the fifth and final season premiere, Reese and Finch attempt to rescue the Machine's source code before it deteriorates beyond repair. Also, Root fights for her life against an onslaught of Samaritan's agents and Fusco is faced with hard questions following the deaths of Dominic and Elias.

The Machine experiences a glitch upon rebooting, supplying Reese and Fusco with the numbers of dozens of people not actually involved in crimes, while also locking Finch and Root out after identifying them as threats based on their past violent behavior.

Reese's cover could be blown when he realizes that the latest POI has a connection to his old colleagues in the CIA.

Root goes undercover to protect a conspiracy theorist who stumbles upon information that could get him killed. And Samaritan agents try to prove a point.

Shaw escapes her captors, but the team is unsure of her mental state when she begins to act paranoid and reckless.

Reese protects an NYPD analyst whose investigation into a software glitch has drawn the attention of Samaritan. Fusco is threatened by an ally of Elias out for revenge.

The Machine sends Reese and Finch to a wedding to protect a pair of POIs before their nuptials. Also, Fusco rebels against the team.

Reese and Finch become trapped in a hospital which has just become ground zero for a deadly viral outbreak. Also, Samaritan's newest recruit has second thoughts, and Shaw continues to struggle with reality.

The mysterious criminal mastermind known as "The Voice" returns, trapping Reese and Fusco in their own precinct with several armed gang members and the latest POI. Also, Root makes a shocking discovery.

Finch's number comes up when a fatal error blows his cover identity and sets off a series of escalating encounters with Samaritan's operatives, on the 100th episode.

The team must unravel a conspiracy and stay ahead of the Secret Service when the President of the United States (guest star JOEL HABERLI) becomes their newest POI. Also, Finch separates himself from the team and considers taking drastic action to combat Samaritan.

As Reese and Shaw race to catch up with Finch, he infiltrates a maximum security government facility in a desperate mission which could mean the end for not only Samaritan, but for himself and The Machine as well.

In the series finale, the POI Team – Finch, Reese, Fusco and Shaw – embark on one final mission to prevent Samaritan from destroying The Machine and cementing its hold over mankind.