The Best Episodes Written By Greg Plageman

Valens partners with Rush to locate her abducted, drug-addicted sister, while Jeffries tries to bring justice to the case of a murdered teenaged girl that has haunted him for 17 years.

Finch and Root race to save The Machine, which has been located by the rival AI, Samaritan. Also, Reese is caught in the middle of the final showdown between rival crime bosses Elias and Dominic.

As the clock ticks down, Reese winds up trapped with his POI in the most heavily surveilled part of the city, forced to rely on the help of Finch, Carter and Fusco to fend off the FBI, corrupt cops and a slew of old foes.

The team takes desperate action in its race to prevent the malevolent AI program Samaritan from coming online and making them its first targets. Meanwhile, the months-long battle with the anti-surveillance terrorist group Vigilance comes to a shocking conclusion.

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.

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.

Realizing that the missing Vera has finally hit rock bottom, his worried team members hope that a new twist to a 2006 arson case, which he was secretly obsessing about in recent weeks, might supply leads to his whereabouts.

When a person of interest is poisoned, Finch and Reese only have 24 hours to identify the toxin and find the person responsible; Detective Fusco's past catches up to him.

Reese boards an international flight in an attempt to put the team and the past behind him, but is angered when he realizes his travel plans have been manipulated.

The Machine delivers the number of a cold case that leads Reese ever closer to catching up with Finch and his kidnapper, Root.

A father pushes a registered sex offender off of a building and threatens to kill a different sex offender each day until the cold-case unit solves his son's 1987 rape and murder.

Forced to take on new identities provided by Root, the team members try to adapt to their new lives. However, some find it hard to ignore The Machine's numbers, which puts them all at risk of being detected by Samaritan.

Reese and Finch’s game of cat and mouse with Detective Carter becomes infinitely more complicated when The Machine declares that she is their newest POI.

The Machine, now completely self-governed with its whereabouts unknown, resumes giving Finch its "irrelevant" numbers for people in danger, which include a U.S. naval officer in town for Fleet Week. However, with so many sailors flooding the streets of New York City, finding the officer in time presents an even bigger challenge for Reese and Shaw.

When the remains of a sandhog miner who disappeared in 1947 are found in a subway service tunnel, the team is prompted to re-open the case when they suspect the victim might have been murdered for being a union activist.

Lilly investigates the murder of a 17-year-old prep-school student who disappeared in early 2006 and whose body is found stuffed in an oil drum outside an abandoned warehouse in a drug-infested part of the city. Also, Vera pays a parking ticket for his neighbor and later asks her out on a date.

Reese and Finch question the machine's reliability when they are asked to investigate a teenager who was killed years earlier; Finch remembers the origin of the machine.

The team re-opens the 1999, 2001, and 2003 pipe bombing incidents that killed two and blinded one victim. The serial bomber is still on the loose and ready to strike again as he missed his latest target.

With Hart in grave danger, the team must find their own way to stop Ramsey before his plan to assassinate a senator starts a war with international terrorists.

Reese and Finch must protect Harper, a street-smart grifter, when her plan to steal cash from a medical marijuana dispensary goes up in smoke.

Bryan Mills fights for his life inside a secret Mexican prison and plans a series of dangerous deals to put him on track for escape to the United States. But plans change when Mills and a young migrant girl are taken by human traffickers. Meanwhile, Christina Hart leverages her spycraft skills to obtain powerful new software that could locate Mills, and enlists two unlikely allies to aid in her mission to bring Mills home.

Flynne and Wilf discover Aelita’s ties to the Neoprims, who want to destory London as we know it. Inspector Lowbeer makes her appearance in London and demands to meet Flynne, Burton and Conner.

Lev sabotages Flynne’s treatment. Ash finds an unlikely ally. Wilf discovers some unsettling truths about Aelita. Flynne tries to save her world from Cherise.

The team re-opens the 2002 case of a 14-year-old math whiz whose half-brother exploited his unusual talents: card counting and safe cracking.