"Prologue" - Tuesday, Aug. 5, at 10 p.m. (ET/PT)
After a missing FBI agent turns up dead, Pierce is forced to face the one case he was never able to solve. When they discover that the killer is still out there, Pierce agrees to help Moretti, against the wishes of his therapist, Dr. Rosenthal (guest star Robert Curtis Brown), who believes it will only exacerbate Pierce's condition.
Directed by Alrick Riley
Written by Michael Sussman
Created by Ken Biller & Michael Sussman