According to a 2024 study by the Ministry of Equality, at least 114,576 women engage in prostitution in Spain, a third of whom are in Catalonia, which is said to be the region with the most prostitutes in Europe. At the San Sebastián Festival, the official section presented this Friday El castillo, a Movistar+ series that seeks to explain the reality of prostitution based on the boom that occurred at the end of the last century with human trafficking for sexual exploitation when, coinciding with economic growth and the increase in immigration, Spanish pimps went from exploiting two or three women to the massive and wild importation of immigrants from poorer countries and controlling them through a debt that was increasing in a perverse way.