Finally, the Criminal Minds episode we were waiting for most of the season to witness.
"Carbon Copy" brought the BAU's stalker back to the forefront and this time the team was determined to focus solely on him - especially after JJ received an ominous bouquet of flowers with a one-word note: Zugzwang.
That's the chess term that refers to a condition in which a player whose turn it is to go can only make a move that will worsen his situation. Generally, it means the player is irrevocably destined to be checkmated. Uh-oh.