Aram goes undercover to infiltrate a secret society of wealthy thrill-seekers, whose entertainment hinges upon spectacular acts of violence. Meanwhile, Red tries to negotiate with a former associate involved in the Townsend Directive, while Katarina Rostova takes steps to insinuate herself into Liz's life.

Liz and the Task Force investigate an infamous assassin who has a long history of weaponizing diseases, but has now turned to even more insidious activities. Meanwhile, Red and Dembe travel to Cuba in search of a lead, and Aram considers a new relationship. Elizabeth Bogush guest stars.

Red alerts the FBI to the suspicious death of a scientist specializing in artificial intelligence research. Meanwhile, Francesca Campbell further entangles herself in Red's criminal activities

With the help of the Task Force, Red tracks a gifted art forger who has thwarted his plans to sell stolen pieces. Aram’s love life becomes increasingly complicated. Liz and Ressler confide in each other.

The Task Force investigates a series of attacks on data centers perpetrated by a blacklister with a peculiar condition, as Liz conducts a secret investigation on the side. Meanwhile, Glen desperately tries to prove his value to Red after a shipping mishap.

A Blacklist case becomes personal for Agent Park when the team investigates a mysterious disappearance in the Alaska Triangle. Meanwhile, Aram enlists Red’s help to find out what really happened to Elodie’s husband.