Here's the official guide of Criminal Minds season 8 episode 18 "Restoration". This episode airs on Wednesday, April 3 on CBS.
WHEN THE BAU HEADS TO MORGAN’S OLD NEIGHBORHOOD IN CHICAGO WHERE HE FACES HIS PAINFUL PAST --
Skipp Sudduth Returns as Captain Stan Gordinski, Who Helps the Team with the Investigation, and Julius Tennon Reprises His Role as Carl Buford, Morgan’s Abuser
- The BAU goes to Morgan’s old neighborhood in urban Chicago in search of an UnSub targeting middle-aged men, and a clue leads Morgan to believe that they are after someone connected to the man who molested him as a child.