|Season 9, Episode 4|
|Air date||October 16, 2013|
|Written by||Erica Messer|
|Directed by||Rob Bailey|
The BAU meets their new section chief, Mateo Cruz, who, unbeknownst to them, shares a long work history with JJ. Cruz joins the team as they comb the streets of Baltimore for an unsub who leaves victims unable to communicate.
- David Anders - Anton Harris
- Brian Appel - Agent Anderson
- Daren Dukes - Truck Driver
- Franklin Killian - Sam Carter
- Esai Morales - Section Chief Mateo Cruz
- Emily Podleski - Dana Harris
- Charles Rahi Chun - Dr. Hoshino
- Martin Thompson - Aldor Harris
- Jeffrey Dahmer, The Milwaukee Cannibal
- Derek Morgan: "Someone I loved once gave me a box full of darkness. It took me years to understand that this too was a gift." Mary Oliver.
- Aaron Hotchner: "Death is not the greatest loss in life. The greatest loss is what dies inside of us while we live." Norman Cousins.