This was definitely one entertaining hour of Criminal Minds. In this particular episode, it was one of the ones in which I especially hated the unsubs, as they were killing for the fun of it - which strictly and consummately differs from, say, two episodes ago.
The storyline was quite interesting, and there was a lot to enthrall - from the eventuating riot, to the Morgan//Barnes situation and even the culmination of the episode, in which things ended exactly as the BAU predicted.
The storyline was spectacularly written, and I have to say that I did love this episode. The fact that we had a group of killers also added interest and intrigue, as it isn't something we see aparticularly often, and it is certainly the first we have seen for the season this year.
All up, great episode and keep it up, Criminal Minds!