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

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.

As Madani and Krista debate who's worth saving, Frank prepares to storm Russo's territory. A brutal encounter pushes Pilgrim back into old habits.