Managers of the Atlantis night club in Costa Rica were arrested by police on charges of human trafficking and sexual slavery. A total of 25 women from Colombia, Venezuela, Honduras, Nicaragua, Dominican Republic and Russia were rescued from the operation in the La Uruca suburb of San Jose. Police allege that the owners brought the girls into the country, took their passports, prevented them from leaving, and paid less than they expected to earn as dancers in the night club.
http://www.undercovercostarica.com/2012/05/sex-slaves-at-night-club-atlantis-in.html
The article included some information about the manager and American owner that wasn't reported in the news.
I have to say that the high end places are not all that great anymore, considering the clubs like Nicole's has gone low price and Margaritas and Arcadas are getting better.