Madani and Sam plan a delicate operation, Curtis tries to connect with Lewis, and Frank encourages Micro to get his hands dirty.

Frank and Micro go looking for answers from a reluctant witness. Madani and Sam learn of a looming investigation. Rawlins sees a ghost.

Following a deadly explosion, Karen lands in a bomber's crosshairs -- and Frank isn't happy about it. Meanwhile, Curtis makes a grisly discovery.

An attack on a high-profile politician is examined (and reexamined) through different perspectives. Madani faces a painful truth.

As danger knocks on Sarah's door, Frank takes his quest for vengeance to the next level with some help from an unexpected ally.

As the authorities close in, an exhausted but unbroken Frank vows to put an end to the war that has consumed his life.

Frank and a reluctant Rachel go on the run as a menacing adversary gives chase. Meanwhile, Madani pays Russo an unwelcome visit.

Rachel recalls the night everything changed and lets Frank in on the truth about her name. Russo sits down with a face from his childhood.