Vic learns that the federal agent helping them out is in the "blackmail box" and has ties to Cruz Pezuela. Dutch tries to find out if he has a future serial killer on his hands, and Claudette's health is brought into question.

Cast: Michael Chiklis, Catherine Dent, Paula Garcés, Walton Goggins, Michael Jace, Jay Karnes, David Marciano, Benito Martinez, Cathy Cahlin Ryan, David Rees Snell, CCH Pounder, Laurie Holden, Anna Maria Horsford, Bob Morrisey, Ray Campbell