The FBI searches for the man responsible for a chemical attack on a subway; Liz wants to avoid Red after he implicated Tom.

Liz infiltrates the blacksite and disarms the signal jammers to call in backup but runs into trouble along the way. The fate of Ressler hangs in the balance as Red tries to bargain with Anslo Garrick. Meanwhile, Tom becomes increasingly worried about Liz’ situation and the fate of Red is unknown.

After a cyber defense asset is stolen by a terrorist only known as Ivan, Red and Liz discover a cover-up; new evidence regarding Jolene's disappearance unravels some of the mystery surrounding Tom.

Red thinks the Kingmaker (Linus Roache), a strategist, is responsible when a politician in Prague is framed for murder; Liz uncovers a secret Red has been hiding.

With Ressler in hot pursuit, Liz only has Red to trust; Red asks a lawyer named Marvin Gerard for help with a hostage situation. The FBI wants to force Cooper out of the task force.

Liz and Red take a detour to the Midwest. Ressler, Aram and Samar accidentally uncover what could turn into a global food crisis. Cooper seeks help from an unexpected source.

When Reddington links an elegant, powerful and extremely dangerous woman to the recent tragic events, the task force is forced to play a deadly cat and mouse game to stop her before she strikes again.

As Reddington and the task force close in on the person responsible for Liz's death, a shocking betrayal leaves them racing to save one of their own.