[It's a complicated question, and the only answer Haise issues at first is a thoughtful hum. He doesn't consider the reality of it to be pretty, and so he's often avoided discussing it with those he's met in ALASTAIR. There are no clear-cut answers to be had under the circumstances, and he exists between two worlds he isn't wholly part of by virtue of his own altered biology]

We particularly focus on those that kill for sport, or overindulge. Ghouls who moderate their habits are more difficult to spot, and some will find means to sustain themselves without drawing very much attention. Those who count as serial killers, however, we tend to pursue.

[Any ghoul is supposed to be destroyed on sight, technically. But it's in Haise's benign nature to take them into custody instead. Whether his mercy is misguided or not, he hates the idea of destroying someone for being what he is.

What fairness is there in that? If he can convince his superiors that keeping them alive is useful, then that's what he'll do]

I'm not...privy to the exact means of provisioning meals for those who are kept in Cochlea. That's a prison facility for ghouls.

[He knows the main ingredient, because he was one there too, but...]