Joyce Greenleaf

The BAU travels to Boston when the serial killer from one of Agent Hotchner's first cases, which involved one of the most notorious murderers in the history of New England, returns after 10 years.

Relationships at any age face growing pains.

Ray is in recovery mode, striving to reconnect with his family and repair his relationship with Bridget. As he tries to reconcile past trauma with the guidance of Father Romero, he finds a professional boxer and fellow abuse survivor in need of his assistance. Bunchy and Teresa face impending parenthood together as Abby receives a medical diagnosis that threatens to upend the Donovan family. In the aftermath of the Minassian shootout, Ray becomes embroiled with an enigmatic art dealer who has ties to the Russian Mob. Hiding out in Primm, Nevada, Mickey plots a heist against a formidable casino owner as Detective Muncie closes in on his trail.

Ruth is stunned by the visitors at a porn star's wake; Nate has a strange first meeting with Brenda's brother Billy (Jeremy Sisto); and Keith takes issue with David's desire to replace his father as deacon at the family church.

When the FBI's hands are tied with red tape, Brad helps Denise go undercover as a rogue agent in order to find a missing boy who is close to her heart. But when legal and ethical roadblocks appear, they must make some difficult decisions. Meanwhile, Denny's nonchalance regarding the use of firearms becomes a real concern for the other senior partners when he shoots a homeless man in the head with a paintball gun.