I'm not sure what happened to Cain. But considering they're a hell of a lot more strict and specific here? Dunno, could be anything.
I don't think that should deter you in any case. If your curious then go for it. I'd consider it self-preservation, you want to know what you're locked up in here with don't you?
I haven't found many, but there are some dangerous types. Probably some sicko's pretending to be innocent too.