Bruce is not in any way ignorant to the kind of city Gotham is. Poverty, violence, corruption, crime of all sorts. If it's illegal, it's probably happening somewhere in his city - you just have to know where to look. The Bat? Knows where to look.

And look, the thing is, nothing's black and white. Not every criminal is a bad person, sometimes - oftentimes - they're just people in a bad situation. Sometimes they're just doing what they need to to survive. And sometimes they're only 'criminals' by technicalities, because of laws that he may or may not agree with but can't change. Sometimes, it's all of the above.

The point is, yes. Gotham has brothels. 'Escorts' are common enough in a couple parts of town. And, whatever he might think of that, well... the truth of the matter is? Sometimes that comes in handy. No, not like that. It's like nightclubs or drug dens. Anyplace of questionable character and legality, on the fringes of society where people who have found their way outside of polite company might frequent - those places? They're absolute founts of information. If you know how to get it.

In the Dark Knight's experience? Asking directly and dropping some money on the table usually works. At least it does with the particular 'contact' he's made. He wouldn't say they're an ally, exactly, but... well, he's shown up a time or three pursuing information on a case, and sometimes? Sometimes, they've got it. For a price, usually.

It's never gone beyond that (though not for lack of the occasional attempt, on their part). The Bat's here for information and little else. But, well, he's the sort of guy who... wonders. Worries, even, about the people he works with - and like it or not, they're starting to ping on that radar. Maybe it's not his place. When has that stopped him?

"Hello," he offers by way of greeting, as if coming in through a window was a completely natural method of ingress. For him, it pretty much was. He's looking for information again - and he knows where to start.