SUGITABRO IS IN THIS EPISODE! THAT FACT ALONE MAKES THIS ONE OF THE BEST EPISODES OF THIS ANIME!
Okay, I’m done with my fanboying. Two big things in this episode. Let’s get to it.
The elite MP is actually far from elite and is actually filled with corrupt officers. I really like how the anime was pretty spot on with the depiction of a corrupt police force down to the bribing of the rookie guy, it’s amazing. Sugita’s character in this episode was used to talk to how most people who wish to do noble things end up being eaten by the system and end up just drifting along the flow and to see how Eren’s strength of purpose is pretty inhuman.
Annie is the Female Titan (as if it wasn’t obvious enough), but the reveal really isn’t the big thing here, it’s her dialogue throughout this episode is the object here which shows her conflict: Humanity. By being with humans, Annie, a Titan, gained humanity and that interfered with her mission as a Titan. “I have failed to become a warrior.” she said, and I think that line means something.
Also I like the parkour of the people rushing to subdue Annie. That’s pretty amazing stuff.
I’m looking forward to the next episode!
Kuro's anime ramble blog 
I hope they tell some more backstory on Annie how she became that Titan or Human, telling us more about Titans themselves. As you said, the corrupt side of the police/army is very strong in this series, showing that they have become drunk with power.
I think episode 25 will cover Annie’s backstory. 😉