This was one of my least favorite episodes ever, even though I really love Prentiss as perhaps my favorite character.
The storyline was definitely deifferent from anything in the past - I'll give it that much, but I didn't enjoy the idea of the exorcismsf. It was quite freaky and it gave me some nightmares for sure, but it wasn't even that gripping.
All up, I wouldn't recommend this episode. It ws not very interesting and it was overly freaky and I didn't enjoy it. Thumbs up for trying something different in this episode, but safe to say, it didnt work well.
I know Criminal Minds is awesome, and I'm sure it weill return to a high standard in the coming weeks.