While continuing to battle Berlin, Red faces a new threat in the form of Lord Baltimore; a figure from Red's past returns; Liz tries to move on after her showdown with Tom.
A robbery provides Red with an opportunity to take down a questionable bank; Liz questions Red's intentions during the course of her investigation; an impressive addition is made to Cooper's team.
When a body is found missing a heart, Keen and Ressler join forces with Samar Navabi to investigate Dr. Covington's operation; Red and an associate try to take advantage of an opportunity in Indonesia.
Red thinks a dangerous sociopsychological experiment may be taking place when several previously nonviolent citizens become killers; Red has a complicated proposition for Naomi (Mary-Louise Parker) and her husband.
An eco-terrorist cell searches for a destructive weapon; Liz tries to escape her guardian; Red pursues someone important to him.
Agent Keen asks Red for information about deadly wildlife poachers after a mutilated corpse washes ashore; Agent Ressler forms a dangerous habit.
A plot for revenge emerges after an Iranian nuclear scientist is assassinated; Liz and Ressler wind up in a predicament.
Red and Berlin search for a high-ranking Russian official in Moscow; Liz fights to keep her secret from unraveling.
When Red is arrested and taken to a secret detention facility, Liz and the task force set out to save him; Red has an encounter with a thief named Luther Braxton (Ron Perlman).
Cooper struggles to save his team from the detention facility; a race ensues as Luther Braxton tries to attain confidential information.
The task force must rescue an undercover CIA agent who was kidnapped by separatists in Uzbekistan; Red thinks they are up against a dangerous past associate known as Ruslan Denisov.
Red tells Liz about the disappearance of a polygamous cult leader who has dangerous shipping containers buried on his property.
Red helps Liz and the task force find a killer known as the Deer Hunter who tracks victims like prey; Liz tries to keep her secret under wraps.
Reddington is drawn into a deadly game with a family whose fortune was gained through the auction of human and material contraband; Tom takes on a new mission.
Agent Keen's unique relationship with Red and the task force is scrutinized when she is questioned in court as a murder suspect; Red turns to Ressler and Cooper for help finding a dangerous former associate who could keep Liz out of prison.
As evidence builds against Liz, a judge makes it clear that she will face severe charges; Ressler and Reddington ramp up their efforts to exonerate Liz but it becomes clear that they need Tom Keen's help.
The task force hunts a scientist who kidnaps disabled patients in order to further his research on immortality; Tom must evade new enemies.
The task force pursues a provocative frame-up artist (Ana de la Reguera) who targets wealthy people; Tom begs Liz for help; Red pressures Liz for the fulcrum and claims it's a life-and-death matter.
Red begs Liz to track down a figure from his past with knowledge of the Fulcrum; Tom is helpful in an unexpected way.
After decoding information embedded in the fulcrum, Red must stop an imminent threat; Liz looks for answers about her past.
Intel from Red has the FBI one step behind a dangerous Russian assassin; Liz and Ressler meet with Russian Counter-Intelligence, who may also have information about Liz's mother.