I don't really feel any affinity for any of the characters in this series, this season, but this episode was better-written than the last one full of babe hallucinations. Having an experiment like this actually take place on a university campus in the U.S. would of course be ludicrous/impossible, but it made a good story. We probably have enough school kids killing each other in this country already, though, so it probably wouldn't be a good idea for the teachers to incite violence.The "puzzle" in the beginning and end of this ep from a wiretap recorded in the previous episode was incredibly obvious, and I don't understand why they made such a big deal out of it. You're wiretapping one crooked guy talking to another on the phone in a car in a vague, threatening, low tone from a safe distance,under the cover of darkness, in the previous episode--of course it was a death "threat;" what else could it have possibly been? Isn't that what guys like that do all the time to keep everybody in line? What did he think--one crooked guy's counting down and threatening to eat the other crooked guy's last pizza slice? It was just too obvious to write it as a drawn-out puzzle that nobody could figure out without extended pondering and digging.Watch it anyway; decent murder mystery.