I'm glad Miami seems to be picking itself up again after a few bad episodes eariler on. It means we're probably going to get a good finale, which is always positive.
As for this episode, the drug thing has been done to death but doing it from the point of view of people in rehab was an interesting new twist, and I really loved the continiuity and interaction between Jolene and Eric. It was just a really sweet touch.
Horotio was minimal in this episode, but he still got his one liners in, of course. Ryan was still annoying me, I must say, but I quite liked Natalia in this one. No enough screentime for Calleigh, but she has some good lines with Alexx.
Pretty great episode.