Ok I really officially HATE Margaret now.
She's feeling bad about her relationship with her siblings so she decides to cheat with Nucky's bodyguard?

I didn't care about Margaret and her siblings. Not one bit. She gets on my nerves. Self-righteous and lugubrious. Not a good combination.

And Jimmy's mother is sleeping with Luciano again? WTF?

It turns out the female prosecutor is actually based on reality

"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming

Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.