Entropy

"Entropy" is the eleventh episode of Season Eleven of Criminal Minds.

Summary
In its investigation and manhunt of the Dirty Dozen hitmen ring, the BAU implements an elaborate strategy to try and take it down, in which Reid plays a central role.

Guest Cast

 * Rochelle Aytes - Savannah Hayes
 * Finn Carr - Young Spencer Reid
 * V.J. Foster - Daniel Adams
 * Pete Freeland - Lawyer
 * Victor J. Ho - Chemist
 * Aubrey Plaza - Cat Adams
 * Erich Riegelmann - Barry Winslow
 * Mark Semos - Sniper
 * Kai Stein - Little Boy
 * Aisha Tyler - Doctor Tara Lewis

Trivia

 * In physics, entropy is a thermodynamic quantity that represents the unavailability of a system's thermal energy for conversion into mechanical work. The term is often interpreted as the measure for disorder or randomness in the system, and has also been used as a word for "lack of order or predictability; gradual decline into disorder".
 * Mark Semos, the actor who portrays a sniper, previously appeared on Criminal Minds, portraying a SWAT agent in the Season Ten episode Lockdown and an FPS leader in the Season Eleven episode The Witness. He has also done some occasional stunt work for the show since Season Six.