You know, this tale might have some factual grounds. I recall reading in FT a looooooooooooong time ago (the issue had a picture of a black cat on the front I think, around about 1993ish). There was a report in there about how either Thai or Venezualan prostitutes were luring customers to hotel rooms, and then spraying them with a scopolamine based substance which rendered the poor customer unconscious for a couple of hours, only for them to wake up with all their belongings gone. If someone can dig out the issue and post the accurate article it'd be nice. I can't remember the facts exactly.