This was pretty much a stopgap episode that took care of some necessary plot points while setting things up for whats to come.
It looks like they are going to brush the bathroom murder aside. I'm OK with that I guess, though I do wish that they'd devoted a few more minutes onscreen to explain how Dexter had covered his tracks.
I liked the scene with Harrison and Dexter in the moving van. Pretty creepy.
In the previews they cut it to look like when Dexter tranquilizes the oildrum guy that he doesn't go down right away. That would be an interesting development. Maybe he has a resistance due to recreational use of animal tranquilizers? I am probably reading something into nothing here.
The LaGuerta-Batista thing is becoming a bit tiresome.