A dangerous drug kingpin from Eva's past resurfaces when two children and a daycare worker are killed due to an accidental drug exposure. While the team works the case, Eva wavers between her mission as an agent and her personal vendetta.

When the body of a VA psychiatrist is found tortured and deceased under a nearby overpass, the team is led to a suspicious religious leader with a substantial online presence. Meanwhile, OA builds a connection with Special Agent Zara Ushruf, who assists on the case.