FBI Special Agent Lewis uncovers a world of corruption inside a jailhouse.

The FBI races to track down the polished young woman on a multi-million-dollar jewelry store robbery spree spanning five states; if they can bring her down, agents hope she'll cooperate and reveal the full extent of the gang operating behind her.

The FBI discovers the makings of a terror plot in a small town in Kansas. Special Agents Amy Kuhn and Robin Smith face a battle to save the lives of hundreds of people while keeping their informant safe.

In Boston, the violence of El Salvadorian gang MS13 is spreading; special agent Jeff Wood is the head of the FBI's North Shore Gang Taskforce and faces a battle of wits and wills to put an end to MS13's violence in his city.

In South Florida, real doctors prescribe deadly opioids in quantities that don't make sense; FBI Special Agent Jennifer Turner uncovers a criminal empire, and she's got one shot to take them down.

A kidnapping brings FBI agents to rural Illinois in a race to find Larry and Connie Van Oosten. The truth behind the abductions shocks the small town.