Yeah, this episode didn't really grab me like the others have so far. The scenes between Dexter and Debra were still great (I loved her freakout in the elevator, and the way she called him out for always sabotaging the police's cases), but everything else was just kinda... eh.
The storyline with the girlfriend isn't all that interesting, and Sirko is starting to seem like more of just a one-dimensional threat than before.
And I know it was probably inevitable, but the more Debra starts to accept Dexter's serial killing ways, the more it feels like the season is losing the charge and momentum it once had. Hopefully LaGuerta or someone else will get closer to the truth soon, before things get TOO much back to normal.