In a retrospective look at key turning points, steps are retraced that lead Elizabeth Keen to align with a powerful enemy.

As Red and the task force search for Liz, she sets a new plan in motion that has catastrophic consequences.

Feeling the weight of recent pressures, Aram turns to an unusual outlet for release.

The Task Force investigates an accountant who works for lucrative criminals in order to find the violent and thuggish brothers hired for his protection. Meanwhile, Liz must make a momentous decision.

While Red and Dembe enlist Glen's help in stacking the jury to Red's advantage for his upcoming trial, the task force investigates a series of mysterious deaths resulting from weaponized insects.

The task force is thrown for a loop when they encounter a nefarious enterprise that provides doppelgängers for criminals. Red scrambles to counteract a bold move by Liz.

Fueled by his betrayal, Elizabeth Keen seeks vengeance on Reddington.

The task force attempts to stop an abduction by searching for a "treasure man" who uses geocaching to hide illicit goods and facilitate transactions between otherwise warring criminal factions.

The Task Force hatches a plan to steal a Soviet-era cipher machine needed to decrypt coded messages. Townsend puts Liz's loyalty to the test. Red and Dembe are called to an unexpected meeting.

An investigation into an international terrorist operating on American soil tests the allegiances of the Task Force. As Aram faces the consequences of his girlfriend hacking into the FBI computer systems, Red cashes in on a favor.

In a series of flashbacks, Ressler recalls his actions in the aftermath of Elizabeth Keen's death.

The future of the FBI's Reddington Task Force is decided.

A new case arrives at Liz's doorstep, where someone has left a diorama depicting a crime soon to be committed. Meanwhile, Red explores a new business opportunity.

A spate of coordinated attacks on Red's lieutenants puts Dembe in imminent danger, prompting him to relive the events that led him to join the FBI two years earlier.

The Task Force is led to an unusual suspect when the wealthy clients of an apparent escort service start turning up dead. Red and a friend attempt to recover an item after reuniting at a friend's memorial. Cooper heads to Atlanta to follow a lead on his blackmailer.

Liz and Jennifer's pursuit of a lead on the truth about Reddington puts them in unexpected danger. Red steps in to help mediate a brewing prison gang war.

Liz and Ressler investigate a Blacklister who offers to erase gambling debts -- at a deceptively high price. Dembe grows concerned as Red tests loyalties of their business associates in search of the individual who turned him in to the police.

Red and Dembe land in peril when Townsend deploys a torture specialist who uses unorthodox methods to interrogate her victims.

Liz and the Task Force track new leads in their investigation of N-13, while Red takes steps to infiltrate Townsend's criminal organization.

Liz must prove herself to the leader of an elite group of female thieves in order to infiltrate their organization as they prepare for their next heist. Meanwhile, Red contends with unexpected problems in his operations, and Tom channels his energy into fatherly duties.

The Task Force investigates the unexplained disappearance and sudden re-emergence of a governor. Meanwhile, Red and Dembe surveil someone close to Katarina Rostova, as she inadvertently involves Agnes in an operation of her own.

As Red sets Liz and the Task Force on the trail of an eco-terrorist with a mysterious connection to Alexander Kirk, Tom takes matters into his own hands.

Red and the task force hunt for legendary fugitive Robert Vesco, one of history's most notorious con men. Samar makes a life-changing decision.

Red directs the task force to investigate Roanoke, a legendary criminal who orchestrates elaborate extractions. Meanwhile, Liz works to hatch a secret plan with her mother, Katarina Rostova.

After a State Department official is found dead in Beijing, Red and Liz link the murder to a secret keeper known as "The Caretaker," who maintains an impenetrable safety deposit vault for criminals. Red and Liz work with the task force to find the Caretaker and his collection of lethal and classified secrets. Meanwhile, Tom makes a risky decision, while Liz persists on her quest to find out more about her mother.