Emily and Cal venture off the grid as they track Rex Wolfe deep into lawless territory. Back in the States, Nick struggles to swallow a massive lie.

While investigating the home of the most recent Fentanyl Killer victim, Emily obtains a critical piece of evidence. Meanwhile, Nick’s work with a high-profile prisoner turns deadly.

Emily and Cal travel to Moldova to track down the Fentanyl Killer – a task that proves to be more dangerous than anticipated. Meanwhile, Nick is given an order that…