Don't they have a pattern of suddenly seeking psychiatric hospitalization for some "crisis" as soon as they realize they are about to be in big trouble for some antic or other? The doctor who wrote that book said they would stay safely in the psychiatric ward till the police would ease up on the charge (which was usually a misdemeanor)... then the psychopaths suddenly discover they're "sane" and they start aggressively telling their doctor they "don't belong in here with all these seriously insane people". Of course, that was under the old system where they actually hospitalized psychiatric patients!
Anyway, Mark Hacking comes to mind, but who knows what that nut is really like?
"Don't they have a pattern of suddenly seeking psychiatric hospitalization for some "crisis" as soon as they realize they are about to be in big trouble for some antic or other?"
Sure - anything to manipulate and control the situation/others. It is much harder to use psych facilities today (even for those with valid mental illnesses).