Am I the only one think..... regarding Margaret's family in Brooklyn: I don't think it's Margaret's brother and sisters who are in Brooklyn; I think it's a husband and children that she left for whatever reason?
While Van Alden has been distracted from his obsession with Margaret, at the moment, he too has the potential to expose Margaret's past. Especially now that there's a dangerous maid for him to interview. In a show that's partly about conflicted loyalities, I can see Kate's having to choose whether or not to protect Margaret's secret. Van Alden knows her name at the time of immigration, but not that she now has...family in Brooklyn.
I thought it was odd that the father seemed so concerned about Nucky ... and it turns out he thought it was Eli headed for jail. Way to plunge the dagger in both his sons' hearts.
Capone singing to Tommy -- wow. Remember how he said he'd hold his deaf son's hand to his throat while he sang?