"Mayhem" is the first episode, and season premiere, of Season Four (and the 66th episode overall) of Criminal Minds.


After a bomb explodes an SUV in New York City that might be carrying a BAU member, the team goes into high gear to determine who might have been injured in the explosion and to apprehend the terrorists responsible for the mayhem.

Guest Cast

Referenced Criminals

  • The September 11 Hijackers
  • The London Bombers (Yasin Hassan Omar, Osman Hussain, Muktar Said Ibrahim, and Ramzi Mohammed)
  • Azahari Husin, The Demolition Man


  • "Mr. Lonely" by Bobby Vinton

Bookend Quotes

  • Aaron Hotchner: "Never think that war, no matter how necessary, nor how justified, is not a crime." – Ernest Hemingway


Criminal Minds Episodes