Hal, working from the images there, realises that the symbols painted around the interior of the bar are, in fact, exceptionally well known and legitimate Asmodean icons. There's also the phrase 'Stay away from the Horn' written in half a dozen languages in there.

Also, a quick Rumour-check and sightseeing confirms that the Vandermir orphanage recently burned down, killing dozens of children. And that a prominent Devil-affiliated weapon went missing from the Abbey recently.