When lesions broke out on Florence's face, she thought she had crossed a black magic curse that had been cast on her as she left Nigeria to work in Russia's sex trade.
Florence is one of a rising number of poor women lured in recent years from southern Nigeria to Europe with the promise of lucrative work. Many end up selling sex.
Although some of the women knowingly enter into contracts for sex work, few realize they will be trapped like slaves for years, with their traffickers colluding with madams to ensure that juju magic stops them from escaping.