"Nnno. No, I'm not." He thinks a minute before he actually says it out loud but this place and this person seem like they might accept the truth about his history. "But I used to know people who could make... them-or unmake them, as They wanted. If They didn't want... there to be a door out, there wouldn't be one to open." That's not even just a metaphor, but it kind of explains why he'd have felt stuck, before.

"There are other people with your kind... of abilities? Family?"