That's why I am so fond of 'Boardwalk Empire'!
Apart from the gorgeous settings, authentic dialogues and brilliant acting, I love the fact that events are prepared several episodes ahead. The script-writers quite daringly assume that the viewers a) have brains and b) are not afraid to use them. Not a given in TV today!
Plus, it IS a relief to not have to put up with the breasts-but-no-dicks sex-scenes, which have apparently become mandatory after 'Sex And the City', regardless of their ir-/relevance to the plot.