Criminal Minds Wiki

"Demonology" is the seventeenth episode of Season Four and the 82nd overall of Criminal Minds.


The BAU is called to investigate a series of deaths involving exorcisms that appear to be sanctioned by the Vatican, and Prentiss finds herself personally and emotionally involved in the case.

Guest Cast


  • "The Fix" by The Noises 10
  • "My Side of the Story" by Hodges

Bookend Quotes

  • Emily Prentiss: Leonardo da Vinci said, "He who does not punish evil, commands it to be done."
  • David Rossi: "There is no heresy or philosophy so abhorrent to the church as a human being." – James Joyce

Criminal Minds Episodes