Looks like Levi might be related to Mikasa in some way given his surname is Ackerman. Wow, that was the highlight of the chapter for me. Though it could just be an adoptive name as well. And then that guy who killed Reeves was called "Captain Ackerman" by one of his subordinates so I guess he's related to them as well... He's either Levi's father or, again, Levi just adopted the surname from this guy. But Mikasa got her surname from her father, who doesn't look anything like Levi or this Captain Ackerman, so either he's not her real father or her father trained under this Captain Ackerman too (which begs the question as to why he was killed so easily)...
And if it turns out that he wasn't her real father and Captain Ackerman is, and he's also Levi's father... I would personally like this situation the most because it opens up room for emotional development for both Levi and Mikasa, and I fully admit that I would very much like a good brother/sister moment and bond for them. (I don't believe they share a mother -she didn't look old enough- unless Levi's younger than what Isayama hinted with the "surprisingly old" remark, so they'd be half-siblings at best, but if they do share a mother then it's likely she left Levi with Captain Ackerman and ran off to a new life -maybe pregnant with Mikasa and realizing that the Captain's not the type of man she wants as the father of her second child?)
Could also be that Ackerman is just a general name given to a group of people and this is just to stir up interest, Mikasa's mom did say "clan" when talking of that mark she tattooed/carved on Mikasa's forearm.
Anyhow, there's no way Levi doesn't know his own last name, that would just be ridiculous and I hope Isayama doesn't go that route. But it's also strange how no one else in the Corps mentions it, unless he's kept very quiet about it and never told anyone his full name. I have a feeling Erwin already knows though given how much he seems to trust Levi. He's not the type of man that would trust someone he knows nothing about. And I can think of a few reasons why Levi wouldn't have mentioned anything to Mikasa.
Gah, why can't the next chapter be out yet? I want to know how they're related!
I'll miss Reeves though. He was dead on about Levi. Awkward but with a good heart, he's just been through some really awful crap in his life. However he was very rough with Historia considering she didn't know she was royalty and to suddenly have that tossed at your feet is unbelievable, but I also honestly think she NEEDED something like that. She's been in this mopey "woe is me, my life sucks" mode for far too long. It seems like she's ready to focus again now. But yeah, I think that was a little too harsh of him even if ultimately he means well.
I'm also seeing people question whether Levi is a double-agent and working for Captain Ackerman.... I don't see it. Like Isayama would suddenly make the most popular character the bad guy in all this. I think that's even more unlikely than him being killed off at this point. Even if it does end up that the higher ups have very valid reasons for everything and they're not truly "bad guys", it would be strange for Levi to suddenly side with them. He was hiding behind the tree there during the whole thing, for one. If he were really in league with them, I doubt that would've been the case. Also, the whole "this is my fault this is happening" read to me like he [Captain Ackerman] knew Reeves was working with Levi, hence why he mentioned Levi in the first place, and blames himself for teaching Levi things that are now being used against him. Levi was a street thug before becoming a soldier, and given how the Captain seems to be a person of influence, I think it's very likely Levi ran off and left that life behind him. I doubt he'd have been living like that if he were still sided with the Captain.
And Anti-Personnel Control Squad.... Very interesting indeed. Someone's probably going to die in the next couple chapters, someone important and not just some minor side character, to show us how big and bad these guys are. Things certainly did pick up rather suddenly there at the end. Wasn't expecting Eren and Historia to ACTUALLY get kidnapped like that. I hope Captain Ackerman knows that a certain Mikasa Ackerman is far more dangerous than Levi Ackerman in this case.... I also find it kind of funny that Eren's the one taking on the damsel in distress role.
Ooooh, and maybe Captain Ackerman is the Ape Titan! Though I do wonder how anybody living within the Walls wouldn't know about 3D Gear, so maybe that's a stupid guess.