Well, last week's issue of Batman Confidential was the final chapter in Yet Another Retelling of the Dark Knight's first encounter with the Joker -- or rather, in this case, what happened after the Joker was in police custody. After causing multiple deaths while in custody, under guard, and in chains, including the death of at least one judge, the authorities were at a loss with what to do with this pasty-skinned sociopath. They couldn't put him in with the mainstream prison population, and they couldn't remand him to conventional psychiatric care.
As Gordon and the D.A. (a pre-acid Harvey Dent, I believe) were having this conversation, a television in the background showed a news story about a certain old hospital being converted into condominiums.
One of them says, in disbelief, "Can you believe this? Didn't they used to experiment on patients there? Who the hell would want to live there?"
On the next page, it's announced that the state has used eminent domain to reclaim the property, which was going to become a special facility for extremely dangerous psychiatric cases.