Thank you very much Poli and Perikles. It looked like an idiom to me, but I couldn't find it in the many dictionaries on-line and just found a few dozen instances using Google. Maybe it's a bit outdated expression and that wouldn't surprise me as Boardwalk Empire makes an obsessive reconstruction of the '20s, including language, that is commendable.
If it is an idiom and it was "unattended", well, mission accomplished because I just looked it up again and this forum thread is hit number 1 for "hitting all six" -including quotes- and 1 to 4 without quotes.
