Another really strong episode. I liked that they picked right up from the last one, and had Debra continuing to ask all the right questions. And Carpenter's reactions and behavior all felt absolutely spot-on.
The only thing that made me cringe a little was her deciding to have Dexter move in with her, since it seems like a pretty obvious setup for something weird and romantic to happen between them later on.
I thought the side story with the prisoner (who really just wanted some sun and ice cream before killing himself) was well-done though, and after the shocking way he killed that guy with a screwdriver, the russian mobster finally feels like a threat worth taking seriously too.