So nice to see more of Margaret. I guess there really wasn't a reason to fear, as it seems it was only a matter of reintroducing her.
I loved this episode, and it's my favourite of this season so far. So much going on in this one. Capone starts his revenge, Hoover officially takes the reigns of the Bureau, and Margaret gets a visit from Rothstein.
Speaking of which, I wonder what he really was up to. Margaret really seemed disgusted to see him knowing he'd done business with Nucky and as someone from a past that she's tried to escape from. Made me wonder since he knows her real identity if he'll end up being a problem for her. If he mentions who she really is to her boss, there's possibility of her not seeing that promotion that was hinted at.