During the 1950s in the Netherlands, Sybille Niemans lived a double life. By day, she volunteered all of her time to charity and rented out properties to make some money, but by night, Blonde Dolly worked as a prostitute for high-class businessmen and politicians. When she’s found dead in her home in 1959, the rumours begin to circulate that one of her clients had killed her after she discovered some crucial information she wasn’t supposed to know.